展开 (4E(x,y)x-5E(x,y)y=14.17)x-2

解答

展开

(4 E (x, y) x - 5 E (x, y) y = 14.17) x - 2

4 xx E (, x y) - 5 x y E (, x y) = 14.17 - 2

求解步骤

(4 E (x, y) x - 5 E (x, y) y = 14.17) x - 2

= x (4 x E (, x y) - 5 \cdot 14.17 = y E (, x y)) - 2

乘开

x (4 E (x, y) x - 5 E (x, y) y = 14.17) : 4 xx E (, x y) - 5 x y E (, x y) = 14.17

4 xx E (, x y) - 5 x y E (, x y) = 14.17 - 2

e x p an d \frac{2 x + 2 sin ( 2 x ) ( x ^{2} + 1 )}{cos ( 2 x )}

e x p an d \frac{( x ^{2} - 3 x - 4 b - 12 )}{x ( x + b )}

e x p an d (e + f + e^{4} + f^{4}) (e + f - e^{4} + f^{4})

e x p an d a^{2 (n + 1)} - 2 a^{n + 1} b^{n - 1} + 120 b^{2 (n - 1)}

e x p an d (3 ln (x) + 3 C)^{2}