f(x)=(1-2^x)/(1+2^x) 求f^-1(3/5)
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f(x)=(1-2^x)/(1+2^x)求f^-1(3/5)f(x)=(1-2^x)/(1+2^x)求f^-1(3/5)f(x)=(1-2^x)/(1+2^x)求f^-1(3/5)（1-2^x)/(1
f(x)=(1-2^x)/(1+2^x) 求f^-1(3/5)
f(x)=(1-2^x)/(1+2^x) 求f^-1(3/5)
f(x)=(1-2^x)/(1+2^x) 求f^-1(3/5)
（1-2^x)/(1+2^x)=3/5
8×2^x=2
2^(x+3)=2^1
x+3=1
x=-2
f^(-1)(3/5)=-2
f(x)={2x+1,x
f(x)={1+x/2,x
f(x)=(x-1)/(x+2)
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