求反函数 f(x)=4x^3+7

解答

求反函数

f (x) = 4 x^{3} + 7

3 \frac{x - 7}{4}

求解步骤

y = 4 x^{3} + 7

用

y

替代

x

x = 4 y^{3} + 7

求解

y, x = 4 y^{3} + 7

3 \frac{x - 7}{4}

r an g e ln (x) + 2

r an g e f (x) = \frac{x ^{2} - 2 x - 3}{x + 2}

cr i t i c a l \frac{3 x}{4 - x ^{2}}

l in e (150, 147.3), (165, 162.7)

d o main f (x) = - x - 3