If f(x)=x^2-x, how do you find f(2x)?
1 Answer
Jun 13, 2016
Explanation:
All that is required here is to substitute x = 2x into the right side in the same way that is done for a numeric value.
f(x)=x^2-x f(2) means substitute x = 2
rArrf(2)=2^2-2=4-2=2 In the same way:
f(2x)=(2x)^2-(2x)=4x^2-2x