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Surface Area

Assuming the function has been defined, one might issue:

  > S:= int(2*Pi*f(x)*sqrt(1+D(f)(x)^2), x= 0..9);


  > evalf(S);


to find the surface area of the solid obtained by rotating f(x) about the x-axis.

Sean O Anderson
Tue Dec 3 12:06:23 EST 1996