Question

The one to one functions G and H are defined as follow

G={(-1,1),(3,8),(4,5)(8,-4)}
H(x)=2x+3
find the following
g^-1(8)=
h^-1(x)=
(hoh^-1)(-1)=

Answer 1

g^-1(8) = 3

h^-1(x) is (x - 3)/2

(hoh^-1) (x) = x

so (h0h^-1)(-1) = -1