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Billy Bob
#2
Oct2-09, 02:18 PM
P: 393
Welcome to PF, *Helix*.


Quote Quote by *Helix* View Post

came up with lim r -->0 [6r^2( (costheta)^3(sintheta)^2))] / [r^4(2*(costheta)^4 + (sintheta)^4]

There's your algebra error. The numerator has the wrong power of r.