f(X)=x^2-1则f(2x-1)=
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f(X)=x^2-1则f(2x-1)=f(X)=x^2-1则f(2x-1)=f(X)=x^2-1则f(2x-1)=等于4x^2-4x.设f(g)=g^2-1,g=2x-1,带入可得.
f(X)=x^2-1则f(2x-1)=
f(X)=x^2-1则f(2x-1)=
f(X)=x^2-1则f(2x-1)=
等于4x^2-4x.
设f(g)=g^2-1,g=2x-1,带入可得.
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f(x)=2x-1,g(x)=x^2,则f[g(x)]=?,g[f(x)]=?,f[f(x)]=?,g[g(x)]=?