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AP CALCULUS · Integrals · Advanced

Integrals: Evaluate math as math. Find math.

Antiderivatives, definite integrals, area.

Try the problem

Evaluate ∫122xx2+1 dx\int_1^2 \dfrac{2x}{x^2+1}\,dx as ln⁡(5)/k\ln(5)/k. Find kk.

Hint and answer

Concept to use

u-substitution.

Hint

Use u=x2+1u=x^2+1.

Answer

1

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