[考古] 清大86
II.
2.(14%) If f:R→R satisfies f(x+y)=f(x)f(y) for all x,y belong to R and
f(x)=1+xg(x) where lim g(x)=1.
x→0
Show that f is differentiable,and find f(x).
以上
感謝~XD
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