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natt
11/28/10 11:55pm

Hi! I'm new to mathematica.
I'm trying to use the manipulate funtion to see the effect of parameters a,b,c,d,p,q on a plotted area.
I defined two functions:

j[a_, b_, x_, y_] := If[a*x + b*y > 1, 1, 0]

k[c_, d_, x_, y_] := If[c*x + d*y > 1, 1, 0]

And used manipulate:
Manipulate[
RegionPlot[
j[a_, b_, x_, y_]*p + k[c_, d_, x_, y_]*q > 1, {x, 0, 1}, {y, 0,
1}], {a, 0, 2}, {b, 0, 2}, {c, 0, 2}, {d, 0, 2}, {p, 0, 2}, {q, 0,
2}]

But I get an error saying that tag If is protected, and I don't really know what it means. Can anyone tell me what's wrong??

Thanks!


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Subject (listing for 'Protected If')
Author Date Posted
Protected If natt 11/28/10 11:55pm
Re: Protected If yehuda ben-s... 11/29/10 12:13pm
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