Since f(a)+f(b)=f(a+b)moneyman wrote:Pls explain
you can pick any two numbers and solve the question. e.g a=1, b=2
or you can think the problem as:
f(x) + f(x) = f(x+x)
2(fx)=f(2x)
Only option E satisfies this:
2(-3x) = -3(2x)
Hence, E
GMAT Function
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logitech
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you can pick any two numbers and solve the question. e.g a=1, b=2
or you can think the problem as:
f(x) + f(x) = f(x+x)
2(fx)=f(2x)
Only option E satisfies this:
2(-3x) = -3(2x)
Hence, E
LGTCH
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