Relations and Functions 5
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Part of video series
Lesson Description:
More practice with relations and functions.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- What is function notation?
- If P(x) = 3x - 2 and Q(x) = x^2 + 1, what is Q(x) - P(x) and Q(x)*P(x)?
- If Q(x) = x^2 + 1, how do you find Q(2x - 7)?
- If P(x) = 3x - 2, what is P(x+h) and P(x + h) - P(x)?
- If Q(x) = x^2 + 1, what is Q(x + h) - Q(x)?
- If P(x) = 3x - 2 and Q(x) = x^2 + 1, what is P(-x) - Q(-x)?
- If P(x) = 3x - 2, what is P(a+h)?
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Staff Review
This lesson builds upon the topics learned in the previous lesson in this series by finding the value of functions with a given input, but now there are multiple functions and they are added, subtracted, multiplied, and divided. Some expressions get a bit more complicated than previous problems. This technique is extremely important to understand for Calculus limits.
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