展开 log_{10}(b)(7x*2y)

解答

展开

lo g_{10} (b) (7 x \cdot 2 y)

14 x y lo g_{10} (b)

求解步骤

lo g_{10} (b) (7 x \cdot 2 y)

去除括号:

(a) = a

= lo g_{10} (b) \cdot 7 x \cdot 2 y

数字相乘:

7 \cdot 2 = 14

= 14 x y lo g_{10} (b)

e x p an d \frac{1}{( n + k ) ( n + k + 1 )}

e x p an d ln (6 t)

e x p an d sin (x) (cos (x) - 1)

s im pl i f y (x + i y)^{2} + i (x + i y)^{2}

e x p an d (y - 1) d x