If `f( x + 1/x ) = x^2 + 1/x^2 - 9` then find `f(x^3)` = ?

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

If f(x-1)=x^(2) , then find f(x+1)

If f(x+1/x)=x^2+1/x^2+8 then f(3), f(5), f(-1)

If f(x)=(x^(2)-x+1)/(x^(2)+x+1) ,then find f(1+b)

If 2f(x)-3f((1)/(x))=6x+(1)/(x) then find f(x) and f(2)

Find domain(i) f(x) = (1)/(x - 5) (ii) f(x) = (3 - x)/(x - 3) (iii) f(x) = (x^(2) - 1)/(x - 1) (iv) f(x) = (| x - 3 |)/(x - 3) (v) f(x) = (1)/(2 - sin 3x)