三角学示例

$y = \cos (x - \frac{π}{2}) - \cos (x + \frac{π}{2})$

解题步骤 1

图像。

$y = \cos (x - \frac{π}{2}) - \cos (x + \frac{π}{2})$

解题步骤 2

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$