Let f = { (1,3), (2,1) , (3,2)} and g= {(1,2), (2,3) , (3,1)} . What is gof(2)?
Does not exist
2
1
3
gof(2) = g {f(2)} = g(1) = 2
If f(x)=xn−anx−a, then f′(a) is