Definite integral of a line
Guided practice — solve each problem, check, then generate a fresh one.
Formula to apply
∫₀ᵇ (a x + c) dx = a·b²/2 + c·b
Problem
Evaluate ∫ from 0 to 5 of (2x + 10) dx.
Working
- 1Antiderivative: F(x) = 1x² + 10x.
- 2F(5) = 25 + 50 = 75.
- 3F(0) = 0, so ∫ = F(5) − F(0) = 75.