Learn how to find the domain for the quotient of two functions

The video tutorial discusses a mathematical problem involving the expression X^2 + 1 with X - 1 in the denominator. It explains the domain restrictions, emphasizing that values less than one cannot be used, and highlights the issue of dividing by zero when X equals one. The tutorial further explains how to represent the domain using brackets and parentheses, indicating whether a value is included or not. The session concludes with final remarks and instructions to students.

What is the expression discussed in the video that involves a denominator?

• X^2 + 1 with X - 1 in the denominator

• X^2 + 2 with X - 2 in the denominator

• X^2 - 2 with X + 2 in the denominator

• X^2 - 1 with X + 1 in the denominator

Why can't the number one be used in the expression discussed?

• It causes division by zero

• It makes the expression undefined

• It results in a negative number

• It leads to an imaginary number

What happens to the domain when one is excluded?

• It is represented with brackets

• It is represented with parentheses

• It remains unchanged

• It becomes negative

How is the domain represented when a number is included?

• With parentheses

• With brackets

• With square brackets

• With curly braces

What is the range of the domain after excluding one?

• From negative infinity to zero

• From negative infinity to one

• From one to infinity

• From zero to infinity