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Base e and the Natural Logarithm

Base e and the Natural Logarithm. Section 10-5. The Natural Base. The natural base is represented by lower-case e e is a constant (like π ), e ≈ 2.718 On TI-83: For e , press [2nd] [ ] For e ^(, press [2nd] [LN] (next to 4). You-Try #1.

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Base e and the Natural Logarithm

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  1. Base e and the Natural Logarithm Section 10-5

  2. The Natural Base • The natural base is represented by lower-case e • e is a constant (like π), e≈ 2.718 • On TI-83: • For e, press [2nd] [] • For e^(, press [2nd] [LN] (next to 4)

  3. You-Try #1 • Use your calculator to estimate the following to four decimal places.

  4. Natural Logarithm • A logarithm with the natural base e is called a natural logarithm • On TI-83, press [LN] (next to 4)

  5. You-Try #2 • Use a calculator to estimate the following to four decimal places.

  6. Example 5 • Solve for x

  7. You-Try #5 • Solve for x

  8. Example 7 • Solve for x

  9. You-Try #7 • Solve for x

  10. Assignment • Page 557 #20-27 ALL, 39, 43, 47, 51

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