- #1
chief12
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Homework Statement
function f is differential when x=0,
f'(0) is not equal to zero for all a,b(real Numbers)
f(a+b) = f(a)f(b)
show f'(x) = f'(x)f(x)
Homework Equations
The Attempt at a Solution
f(a+b) = f(a)f(b) for all a,b(real numbers)
f(0), a+b=0
then f(0) = 1
lim x-->0 f(x) = f(0) = 1
then i get stuck