
#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!!!!! 


Register to reply 
Related Discussions  
Reexpressing double integral using parametric functions  Calculus  0  
Double integration of functions involving bessel functions and cosines/sines  Calculus  0  
Integrating Fresnel Functions (Double Integral)  Calculus & Beyond Homework  0  
How to draw integral with mathematica  Math & Science Software  3  
How to draw the domain of a function of two variables to find the double integral  Calculus & Beyond Homework  7 