← Calculus

How to solve

∫_a^b f = F(b) − F(a) where F' = f.

Steps

  1. Find an antiderivative F.
  2. Compute F(b) − F(a).

Example

∫_1^3 2x dx

  1. [x²]_1^3 = 9−1 = 8.

Answer: 8

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