Identify the domain of the following fractions y 3xx2 81Sol

Identify the domain of the following fractions y = 3x/x^2+ 81

Solution

The expression is not clear, so we will respond to two expressions:

1. y = 3x/x² + 81 or, y = 3/x + 81 Since the division by 0 is not defined, the domain of this function is { x R : x 0}

2 y = 3x/ ( x² + 81). The domain of the function is R, the set of all real numbers..