2反函数说课稿

1,212343y=2xxf-1(y)1/f(x)y=f-1(x)yxxy1211y=3x-1(xR)(2)y=x3+13y=(2x+3)/(x-1)(xRx1)11xxyxyxy1x----y=f-1(x)21y=x2(xR)2y=x2(x0)3y=x2(x0)1y=(xR)xyyy=x2(xR)y=x2(x0)y=x2(x0)121y=2|x|A[24]B[-44]C0+]D-0](2)y=x/(2x+5),(xRx-5/3)3y=x[0,5/2],P65235y=f(x),xAy=f-1(x)