A relation R on a set A is an equivalence relation if R is:

The graph of the identity function f(x) = x is a:

What is the range of the signum function f(x) = sgn(x)?

If f(x) = 1/x and g(x) = x, then (f.g)(x) for x > 0 is:

Let A = {1, 2} and B = {x, y}. The number of functions from A to B is:

The value of the greatest integer function f(x) = [x] for x = 2.7 is:

The domain and range of the real function f defined by f(x) = (4-x)/(x-4) is:

If R is a relation on the set A = {1, 2, 3} given by R = {(1, 1), (2, 2), (3, 3)}, then R is:

Which of the following functions is an even function?

Let f = {(1,1), (2,3), (0,–1), (–1, –3)} be a function from Z to Z defined by f(x) = ax + b, for some integers a, b. Determine a and b.

The radian measure of 40° 20' is:

The value of sin(765°) is:

The value of tan(19π/3) is:

If cos x = -3/5 and x lies in the third quadrant, then the value of sin x is:

The general solution of the equation sin x = 1/2 is:

The value of cos( -1710°) is:

The value of 2 sin 15° cos 15° is: