Learn How to Evaluate the Composition of Two Functions

The video tutorial explains how to evaluate the function H of -2 and then use this result to find G of H of -2. The instructor guides through the process of substituting values into the functions and clarifies the final answer. Additionally, a question about the difference between using brackets and not using them is addressed.

What is the value of H when evaluated at -2?

• 0

• 1

• 2

• -2

How do you evaluate G(H(-2)) given that H(-2) equals 2?

• G(2)

• G(-2)

• G(0)

• G(4)

What is the result of G(x) if G(x) = 5x and x = 2?

• 20

• 15

• 5

• 10

What is the purpose of using brackets in mathematical expressions?

• To denote division

• To indicate multiplication

• To change the order of operations

• No specific purpose

What is the difference between using brackets and not using them in expressions?

• Brackets are for division

• Brackets change the result

• Brackets are for clarity

• No difference