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- Review of Exponents and Radicals
- flflflflflflflflflflflflflflflflflflflflflflflflflflflflflflflfl
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- If a and b are positive integers:
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- a b a+b
- x x = x
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- a
- x a-b 1
- ƒƒƒƒ = x = ƒƒƒƒƒƒ
- b b-a
- x x
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- a b ab
- (x ) = x
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- a a a
- (xy) = x y
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- a a a
- (x/y) = x / y
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- O
- x = 1 ( if x ÿ O )
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- -a a
- x = 1 / x
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- _____
- a/b b › a
- x = \› x
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- -a/b a/b
- x = 1 / x
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- _____
- b › 1/b
- \› x = x
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- _____ _____ _____
- b › b › b ›
- \› x \› y = \› xy
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- ____
- b › ____
- \› x b › x
- ƒƒƒƒƒƒƒ = ›ƒƒƒ
- ____ \› y
- b ›
- \› y
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- ⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒø
- ≥ Common Mistakes ≥
- ¿ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒŸ
- _______ __ __
- NOTE: There is NO formula relating \›x + y to \›x + \›y .
- This is the biggest single mistake we see in this area. If you make this
- mistake it is very unlikely you'll ever do well in calculus.
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- -1/3 1 -1/3 1
- WRONG x = ƒƒƒƒ RIGHT x = ƒƒƒƒƒ
- 3 1/3
- x x
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- _________ ________
- › 2 › 2
- WRONG \› x + 1 = x + 1 RIGHT \› x + 1 cannot be simplified.
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- _________ _________ _________ __________
- › 2 › 2 3 › 2 › 3 4
- WRONG x\› x + x = \› x + x RIGHT x\› x + x = \› x + x
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- This is the end of the help file. Press the ESC key to return to the quiz
- question you were doing.