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Asked by sese on 19 Jul 2013

Hello Guys

Just i am wondering how to solve an integration problem in MATLAB for this equation?? here is the problem below

a= 3.43 int Q*n dr

where n dependent variable on r

Regards

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Answer by Wayne King on 19 Jul 2013

Edited by Wayne King on 19 Jul 2013

Is Q a constant? I'm assuming you mean that n is function of r, like n(r)

Suppose n(r) = r^2 and you want to integrate from [-2,2]

integral(@(r) r.^2,-2,2)

If you don't have a version of MATLAB with integral(), you have options like trapz()

r = -2:0.02:2; n = r.^2; trapz(r,n)

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