y = cos ( x ) y = sin ( 2 x ) x = 0 x = π 2 {\displaystyle {\begin{aligned}&\color {red}\mathbf {y=\cos(x)} &\color {royalblue}\mathbf {y=\sin(2x)} \\&x=0&x={\frac {\pi }{2}}\\\end{aligned}}}
∫ 0 π 6 ( cos ( x ) − sin ( x ) ) d x {\displaystyle \int _{0}^{\frac {\pi }{6}}\left(\cos(x)-\sin(x)\right)dx}
