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<body bgcolor="#FFFFFF" text="#000000">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">I defined the
following two functions:<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<br style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">function [z]=f(x,y)<span
class="Apple-converted-space"> </span></span><br style="color:
rgb(0, 0, 0); font-family: Verdana, Geneva, Helvetica, Arial,
sans-serif; font-size: 13.44px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">z = x + y - 8<span
class="Apple-converted-space"> </span></span><br style="color:
rgb(0, 0, 0); font-family: Verdana, Geneva, Helvetica, Arial,
sans-serif; font-size: 13.44px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">endfunction<span
class="Apple-converted-space"> </span></span><br style="color:
rgb(0, 0, 0); font-family: Verdana, Geneva, Helvetica, Arial,
sans-serif; font-size: 13.44px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<br style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">function [z]=g(x,y)<span
class="Apple-converted-space"> </span></span><br style="color:
rgb(0, 0, 0); font-family: Verdana, Geneva, Helvetica, Arial,
sans-serif; font-size: 13.44px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">z = 2*x + y - 8<span
class="Apple-converted-space"> </span></span><br style="color:
rgb(0, 0, 0); font-family: Verdana, Geneva, Helvetica, Arial,
sans-serif; font-size: 13.44px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">endfunction<span
class="Apple-converted-space"> </span></span><br style="color:
rgb(0, 0, 0); font-family: Verdana, Geneva, Helvetica, Arial,
sans-serif; font-size: 13.44px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<br style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">I then wanted to find
the roots of the two functions (equations). That is, I want a pair
of numbers (a,b)<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">such that f(a,b) =
g(a,b) = 0. So, I found the function fsolve in the documentation
of Scilab which I believe will do what I want. So, I ran the
following command:<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">
fsolve([0;0],f,g)<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">and it produced the
following error:<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);"> Undefined
variable: y<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);"> at line
2 of function f called by : <span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">
fsolve([0;0],f,g)<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">I do not understand
this error and I am hoping that somebody can tell me what I am
doing wrong.<span class="Apple-converted-space"> </span></span><br
style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<br style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255,
255);">
<span style="color: rgb(0, 0, 0); font-family: Verdana, Geneva,
Helvetica, Arial, sans-serif; font-size: 13.44px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; display: inline !important; float:
none; background-color: rgb(255, 255, 255);">Bob</span>
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