展开 (y^4)x^3(3e^x+C)

解答

展开

(y^{4}) x^{3} (3 e^{x} + C)

3 e^{x} y^{4} x^{3} + C y^{4} x^{3}

求解步骤

(y^{4}) x^{3} (3 e^{x} + C)

= x^{3} (y^{4}) (3 e^{x} + C)

使用分配律:

a (b + c) = ab + a c

a = (y^{4}) x^{3}, b = 3 e^{x}, c = C

= (y^{4}) x^{3} \cdot 3 e^{x} + (y^{4}) x^{3} C

= 3 e^{x} x^{3} (y^{4}) + C x^{3} (y^{4})

去除括号:

(a) = a

= 3 e^{x} y^{4} x^{3} + C y^{4} x^{3}

e x p an d - 2 (j - 6 = - 18)

e x p an d 22.99 + 0.07 (22.99)

e x p an d 5 x^{3} + (- 6 y)^{9}

e x p an d 4 (- 6 - 5 m = - 104)

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