how to get derivative

2013 12 22
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更新时间：2013 12 22
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i have a function sin^2xcos(y)/(x^3+1) and i want to get the derivative with respect to x where x varies from 0 to 5 and y varies from 0 to 4 i tried
>> x=[0,5];
>> y=[0,4];
>> ployder (((sin(x)).^2 * cos(y))/(x^3 +1))

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Matt J
Matt J 2013-12-22
编辑：Matt J 2013-12-22

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You mistyped poyder. Plus, it only applies to polynomials and rational functions of a single variable. You should consider the Symbolic Math Toolbox if you have it. I believe the diff() command would be the thing for this.

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