If A={-3,-1,1,3} and `f={(x,1/x)}` Find :`R_f`

If A={-3,-1,1,3} and f={(x,1/x)} Find d.

If A={-2,-1,1,2} and f={(x,1/x):x} Find :Is f a function?

Let A={1,2,3} and B={2,4,6,8} . Consider the rule f:A to B,f(x)=2x,AA x in R . Find the domain, codomain and range of f.

Givem f(x)= x^2-1 and g(x)= (x+1)/2 find f(3)/(f(3)+g(3)) .

Let f : R rarr R and g : R rarr R be defined by f(x)=x^2+3x+1 and g(x)=4x-3 . Find formulas defining the compositions fog,gof,fof and gog.

Show that f : R-{a} rarr R-{-1} defined by f(x)= (a+x)/(a-x) is invertible. Find the formula for f^-1(x) .

If f(x)=x^2-3x+2, A=[(3,1),(-2,0)] , find f(A)