Integral NA in home, CAS

[lrdheat]

I was thinking same thing as Han ("2" exponent)...indeed, Prime plots function as symmetrical around y axis, but comes up with NAN for area under curve from -1 to 1. The question is whether the integral is undefined or not due to f(X) at X=0.

I believe the problem came from my old calculus book from college circa ~1970. The book is at work...I'll check it later today, but I think it came up with an approximate decimal answer.

I find that the textbooks offer a range of problems for testing CAS's. I'm amazed at their capabilities!