y=4x+1/5x-3的反函数,
问题描述:
y=4x+1/5x-3的反函数,
如题
答
y=(4x+1)/(5x-3)
5xy-3y=4x+1
5xy-4x=3y+1
(5y-4)x=3y+1
x=(3y+1)/(5y-4)
∴反函数y=(3x+1)/(5x-4)