展开 d(1-cos(u))

解答

展开

d (1 - cos (u))

d - d cos (u)

求解步骤

d (1 - cos (u))

使用分配律:

a (b - c) = ab - a c

d (1 - cos (u)) = d \cdot 1 - d cos (u)

= d \cdot 1 - d cos (u)

使用法则:

a \cdot 1 = a

d \cdot 1 = d

= d - d cos (u)

e x p an d \frac{6 c ^{2}}{5 d ^{3} ( t ^{2} - 8 t ^{3} ) ^{6}}

e x p an d - \frac{1}{24} (- 6 e^{- 6 x} x - e^{- 6 x})

e x p an d (9 cos (x) - 9 cos (9 x))^{2}

e x p an d \frac{( 7 s ^{2} + 23 s + 30 )}{( s - 2 ) ( s ^{2} + 2 s + 5 )}

s im pl i f y - 3 (1 + \frac{i}{n})^{2}