求反函数 f(x)=((x-6)^{1/2})/7

解答

求反函数

f (x) = \frac{( x - 6 ) ^{\frac{1}{2}}}{7}

49 x^{2} + 6

求解步骤

y = \frac{( x - 6 ) ^{\frac{1}{2}}}{7}

用

y

替代

x

x = \frac{( y - 6 ) ^{\frac{1}{2}}}{7}

求解

y, x = \frac{( y - 6 ) ^{\frac{1}{2}}}{7}

49 x^{2} + 6

r an g e f (x) = 2 (x + 3)^{2} - 1

in t erce pt s f (x) = - 4 (x - 2)^{2} - 3

d o main f (x) = \frac{x ^{2}}{x - 3}

d o main y = 4 - x^{2}

in v erse f (x) = \frac{1}{2} x + 2