solving integral in matlab

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David Cuberes 2020-6-3

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https://ww2.mathworks.cn/matlabcentral/answers/541229-solving-integral-in-matlab

评论： Stephan 2020-6-3

Hi, I want to find the solution to this integral as a function of x: integral(between 0 and x) of (x-z)dz. The answer should be x^2/2. Thanks!

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John D'Errico 2020-6-3

And what, since this is surely homework, have you tried? Have you tried using int? Read the help and the examples for int. I just did it, and indeed, the answer seems to be x^2/2. So why not make an effort?

David Cuberes 2020-6-3

John, it is research, not homework. Thanks for asking! This is what I have tried:

fun=@(x-z)dz;

q=integral(fun,0,x)

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回答（1 个）

Stephan 2020-6-3

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https://ww2.mathworks.cn/matlabcentral/answers/541229-solving-integral-in-matlab#answer_445625

What you are looking for is an analytical solution. The integral function does solve numeric. To solve symbolic use int as John already pointed out. Im sure if you read the informations given in the link you will get it very fast.