$\int\limits_{-1}^{1} (|x - 2| + |x|) dx = $ |
7 5 4 6 |
5 |
$\int\limits_{-1}^{1} (|x - 2| dx + \int\limits_{-1}^{1} |x| dx$ $\int\limits_{-1}^{1} -x + 2~dx + 2\int\limits_{0}^{1} x dx$ even function |x| = x for x > 0 |x - 2| = $\left\{\begin{array}{l}x-2 \quad x \geq 2 \\ -x+2 \quad x<2\end{array}\right.$ So interval (-1, 1) ⇒ |x - 2| = -x + 2 $=\left[\frac{-x^2}{2}+2 x\right]_{-1}^1+\left[x^2\right]_0^1$ = 4 + 1 = 5 sq. units |