7、f(x)=3^X-3^-x
f(x)=x²+3x|x-2|
(1) f(x)=X²+3x 求(X+1)与f[f(x)]
f(x)=-x^3+x
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f(x+2)>=f(x)+2,f(x+3)
一,已知f(x)满足2f(x)+f(1/x)=3x,求f(x).
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已知f(x)满足2f(x)+f(1/x)=3x,求f(x)
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