三角学示例

$\frac{\sin (5 x) + \sin (7 x)}{\cos (5 x) + \cos (7 x)}$

解题步骤 1

图像。

$\frac{\sin (5 x) + \sin (7 x)}{\cos (5 x) + \cos (7 x)}$

解题步骤 2

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