Question 1

Find the inverse function of f informally. f ( x ) = x 8 f - 1 ( x ) = Verify that f(f (x)) = X. F (F - 1 ( x ) ) = F( 5 8 EX Verify that f-(f(x)) = x. f-' ( f ( x ) ) = f-1 5 CO EXVerify that f and g are inverse functions algebraically f(x) = 7x + 1, g(x)=* -1 7 (a) algebraically f(g (x) ) = f = 7 + 1 = X g(f (x)) = g - 1 7 EX