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f(x)=x-2; What is f(4)?
Anything to a negative exponent is the same a 1 divided by that thing to the positive of that exponent. For instance:
2-3=1/(23)=1/8
So while 23=8, 2-3=1/8
This property works with functions as well. f(x)=x-2=1/x2
So, f(4)=(4)-2=1/42=1/16.
f(4)=1/16=0.0625
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