初级微积分示例

$4 \log (49 - x^{2}) - (\log (7 + x) + \log (7 - x))$

解题步骤 1

运用分配律。

$4 \log (49 - x^{2}) - \log (7 + x) - \log (7 - x)$

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