Question

If f(x)= (x-1/x+1), then f(2x) is
A) (f(x)+1/f(x)+3)
B)(3f(x)+1/f(x)+3)
C)(f(x)+3/ f(x)+1)
D)(f(x)+3/3f(x)+1)

Answer 1

option(b)
f(2x)=f(2x-1/2x+1)
by verifying options we get 
(3f(x)+1/f(x)+3)=(4x-2/4x+2)

Answer 2

option(b)

f(2x)=f(2x-1/2x+1)

by verifying options we get 

(3f(x)+1/f(x)+3)=(4x-2/4x+2)

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