If f:R →R is defined by f(x) = x² and g:R → R is defined by g(x) = sinx, then find gof

Let R = {(1,3), (4,2), (2,4), (2,3), (3,1)} be a relation on the set A = {1,2,3,4}. The relation R is

The function f; R → R defined by 
f(x) = [x] x ∈ R is

If the function f:R → R given by f(x) = x² + 3x + 1 and g: R → R given by g(x) = 2x - 3 find gof

If f:R → R is defined by f(x) = x² - 3x + 2 then f(f (x)) = _______.

Domain of √(4x - x²) is

Let f:{2, 3, 4, 5} → {3, 4, 5, 9} and g = {3, 4, 5, 9} → {7, 11, 15} be functions defined as f(2) = 3, f(3) = 4, f(4) = f(5) = 5 and g(3) = g(4) = 7 and g(5) = g(11) = 11
Find gof(4)

Let f:{2, 3, 4, 5} → {3, 4, 5, 9} and g = {3, 4, 5, 9} → {7, 11, 15} be functions defined as f(2) = 3, f(3) = 4, f(4) = f(5) = 5 and g(3) = g(4) = 7 and g(5) = g(11) = 11
Find gof (5)

If f:A → B and g:B → C are onto, then gof:A → C is _________.