初级微积分示例

$\frac{1}{\cot (A) + \cot (C)} = \frac{\sin (A) \cdot \sin (C)}{\sin (B)}$

解题步骤 1

所给方程不是恒等式。

$\frac{1}{\cot (A) + \cot (C)} = \frac{\sin (A) \cdot \sin (C)}{\sin (B)}$ 不是恒等式

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