Question

ANOTHER MATHS PROBLEM! (Quadratics) the function f:x = x^2 - 3x for x is a real number: i) find the set of values where f(x) > 4?

Answer 1

Step 1:

The function is .

Find the values of for .

Consider .

Step 2:

Case I)

If both the factors are positive.

The statement is true for .

Case II)

If both the factors are negative.

The statement is true for .

for all values of and .

Solution:

for all values of and .