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- Review of Natural Logarithms and Exponentials
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- You MUST have all the following information at your fingertips at all times.
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- ln (ab) = ln a + ln b
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- a
- ln ─── = ln a - ln b
- b
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- 1
- ln ─── = - ln a
- a
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- r
- ln a = r ln a
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- ln 1 = O
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- ln e = 1
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- a b a+b
- e e = e
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- a
- e a-b 1
- ──── = e = ──────
- b b-a
- e e
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- a b ab
- (e ) = e
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- x
- ln ( e ) = x for all x.
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- ln x
- e = x for x > O.
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- ┌─────────────────┐
- │ Common Mistakes │
- └─────────────────┘
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- WRONG ln (x + y) = ln x + ln y
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- There is NO general formula which simplifies ln (x + y).
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- WRONG ln (x - y) = ln x - ln y
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- There is NO general formula which simplifies ln (x - y).
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- 2 3 6 2 3 5
- WRONG e e = e RIGHT e e = e
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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.