1. ## Intergral

Integral from 1 to 5:

(modulus) lx-4ldx

2. Originally Posted by manalive04
Integral from 1 to 5:
(modulus) lx-4ldx
The simplest way is to draw the graph of y = |x - 4| and use geometry to calculate the area.

Alternatively, note that $| x - 4| = \left\{ \begin{array}{ll} 4 - x & x \leq 4\\ x - 4 & x > 4 \end{array} \right.$ and set up two integrals.