Homework Statement
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Homework Equations
∫ f(x) g'(x) dx = f(x) g(x) - ∫ f '(x) g(x) dx
f(x)=√(1+x^2)
f '(x)=x * 1/√(1+x^2)
g'(x)=1
g(x)=x
The Attempt at a Solution
∫ √(1+x^2) * 1 dx
=x * √(1+x^2) - ∫ x^2 * 1/√(1+x^2) dx
Further integration just makes the result look further from what...