The video tutorial covers the operations of adding, subtracting, and multiplying functions, focusing on the sine and square root functions. It explains that these functions cannot be combined due to their different types. The tutorial also discusses the domain of these functions, highlighting that the domain of sine is all real numbers, while the square root function is limited to non-negative numbers. The importance of considering the domain when performing operations on functions is emphasized, with examples provided to illustrate these concepts.

What is the main reason the square and sine functions cannot be combined?

• They have different coefficients.

• They have the same domain.

• They are not like terms.

• They are both linear functions.

What is the domain of the sine function?

• Only positive numbers

• All real numbers

• Only negative numbers

• Non-negative numbers

Which of the following best describes the domain of the square root function?

• Only positive numbers

• Non-negative numbers

• Only negative numbers

• All real numbers

When combining functions, what must be true about the domain?

• It must be the intersection of the individual domains.

• It must be the union of the individual domains.

• It must be the domain of the first function.

• It must be the domain of the second function.

What happens to the domain when you add, subtract, or multiply functions?

• It becomes the domain of the sine function.

• It becomes the domain of the square root function.

• It is restricted to the intersection of the individual domains.

• It remains unchanged.