y = tan ( x ) y = 2 sin ( x ) x = − 3 x = 3 {\displaystyle {\begin{aligned}&\color {red}\mathbf {y=\tan(x)} &\color {royalblue}\mathbf {y=2\sin(x)} \\&x=-3&x=3\\\end{aligned}}}
∫ − π 3 π 3 | ( 8 − x 2 ) − ( x 2 ) | d x {\displaystyle \int _{\frac {-\pi }{3}}^{\frac {\pi }{3}}\left|(8-x^{2})-(x^{2})\right|dx}
8 − x 2 = x 2 − 2 x 2 = − 8 x 2 = 4 x = ± 2 {\displaystyle {\begin{aligned}8-x^{2}&=x^{2}\\-2x^{2}&=-8\\x^{2}&=4\\x&=\pm 2\end{aligned}}}
