Integration Sandbox

MTH-117 · Semester I · Mathematics I

Integral of sine

Guided practice — solve each problem, check, then generate a fresh one.

Score 0 / 0

Formula to apply

∫₀ᵇ sin(kx) dx = (1 − cos(kb))/k

Problem

Evaluate ∫ from 0 to 3 of sin(3x) dx. Give your answer to 3 decimal places.

Working

  1. 1Antiderivative of sin(3x) is −cos(3x)/3.
  2. 2F(b) − F(0) = [−cos(3·3)/3] − [−cos(0)/3].
  3. 3= (1 − cos(9))/3 = 0.63704.