展开-3(ln(5x)+1)

解答

展开

- 3 (ln (5 x) + 1)

- 3 ln (5 x) - 3

求解步骤

- 3 (ln (5 x) + 1)

使用分配律:

a (b + c) = ab + a c

a = - 3, b = ln (5 x), c = 1

= - 3 ln (5 x) + (- 3) \cdot 1

使用加减运算法则

+ (- a) = - a

= - 3 ln (5 x) - 3 \cdot 1

数字相乘:

3 \cdot 1 = 3

= - 3 ln (5 x) - 3

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