展开 (x+1)y''(x)+2y'(x)+y

解答

展开

(x + 1) y^{''} (x) + 2 y^{'} (x) + y

x y'' (x) + y'' (x) + 2 y' (x) + y

求解步骤

(x + 1) y^{''} (x) + 2 y^{'} (x) + y

乘开

y^{''} (x) (x + 1) : x y^{''} (x) + y^{''} (x)

= x y^{''} (x) + y^{''} (x) + 2 y^{'} (x) + y

e x p an d \frac{( ( a ^{4} + b ^{4} ) ( a ^{2} + b ^{2} ) )}{a ^{3} + b ^{3}}

e x p an d (- 9, 7) y (- 6, - 3)

e x p an d \frac{1}{2} (\frac{9 - a ^{2}}{2} + \frac{1}{2} (\frac{1}{e ^{6}} - e^{- 2 a}))

e x p an d (x^{2} + 1) sec (h) (ln (x))

e x p an d 5 - 3 5 + 6