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How to draw double integral functions 
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#1
Feb1412, 04:55 AM

P: 17

Hi every one!
I would like to draw a double integral function in related to R and h parameters by below MFile but It does goes wrong!!! Is there any one to correct it for me??? thank you syms R h; a1 = 0; a2 = atan(R./(R+h)); r1 = h; r2 = sqrt(R.^2+(R+h).^2); integrand = @(r,a)(h.*sin(a)/((r.^2).*(r.^2+h.^22.*r.*h.*cos(a)))); f = quad2d(integrand,r1,r2,a1,a2); ezsurf(f,[0.001,5]); 


#2
Feb1412, 11:02 AM

PF Gold
P: 162

There's two problems that I can see right away (and perhaps more that I don't see). For one I'm guessing you're trying to make f a function of R and h? But you just leave them as symbolic objects. The second problem is that where you define the integrand, you need an extra "."
If I understand what you're trying to do correctly then this should do it:



#3
Feb1512, 04:36 AM

P: 17

Thank you very much.
your correctness lets the functions be drawn!!!!! 


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