Question

Let A={1,2,3} and B={a,b} be two sets.
(a) What is the universal relation from A to B.
(b) What is the number of non-empty relations from A to B ?

Answer 1

Answer:

a2 + b2 = c2. We say “The sum of the squares of the legs of a right triangle equals the square of its hypotenuse.” Good hint. Note that the hypotenuse sits by itself on one side of the equation a2 + b2 = c2.

Step-by-step explanation:

a2 + b2 = c2. We say “The sum of the squares of the legs of a right triangle equals the square of its hypotenuse.” Good hint. Note that the hypotenuse sits by itself on one side of the equation a2 + b2 = c2.a2 + b2 = c2. We say “The sum of the squares of the legs of a right triangle equals the square of its hypotenuse.” Good hint. Note that the hypotenuse sits by itself on one side of the equation a2 + b2 = c2.