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Radical Functions and Rational ExponentsPowerPoint Presentation

Radical Functions and Rational Exponents

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### Radical Functions and Rational Exponents

Chapter 7

7-4 Rational Exponents

- Another way to write a radical expression is with a rational exponent:

- homework: p 394-395 (1-47) odd, except 27 and 29

7-5 Solving Radical Equations

- A radical equation is an equation that has a variable in a radicand (or variable with a fractional exponent.)
- If the radical has index 2, the equation is a square root equation.
- To solve a radical equation, isolate the radical expression, then raise both sides of the equation to the same power.

7-6 Composition of Functions

- find f(g(x)) and g(f(x))

7-7 Inverse Functions

- Since an inverse exchanges x values with the y values, to find an inverse of an equation you can interchange x and y, and then solve the equation for y.

7-7 Inverse Functions

- Find the inverse for each function.

7-7 Inverse Functions

- homework
- page 406 (1-11, 23-41) odd
- page 416 (5-21) odds – only find the inverse functions, you do not need to graph these

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