展开 (sqrt(2)x+y)\H(sqrt(2)x+y)

解答

展开

(2 x + y) H (2 x + y)

2 x H (2 x + y) + y H (2 x + y)

求解步骤

(2 x + y) H (2 x + y)

= H (2 x + y) (2 x + y)

使用分配律:

a (b + c) = ab + a c

a = H (2 x + y), b = 2 x, c = y

= H (2 x + y) 2 x + H (2 x + y) y

= 2 x H (2 x + y) + y H (2 x + y)

e x p an d (x ln (x) + y ln (y)) e

e x p an d \frac{4 x - 1}{2 ( 4 x + 1 )}

e x p an d tan (2 (x + \frac{π}{6}))

e x p an d \frac{x}{( x - 0.6 ) ( x + 0.5 ) ^{2}}

s im pl i f y (e^{- i w} - 1)^{2} (e^{i w} - 1)^{2}