Solving Equations...2

Discussion in 'Other Pre-University Math' started by nycmathguy, Oct 22, 2021.

  1. nycmathguy

    nycmathguy

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    Section 3.4
    12, 14, 16

    20211021_222141.jpg

    Question 12

    e^x = 1/3

    ln (e^x) = ln (1/3)

    x = ln (1/3)

    Question 14

    log x = -2

    e^(log x) = e^(-2)

    x = e^(-2)

    x = 1/(e^2)

    Question 16

    log_5 (x) = 1/2

    (base)^(outside) = inside

    5^(1/2) = x

    sqrt{5} = x

    You say?
     
    nycmathguy, Oct 22, 2021
    #1
  2. nycmathguy

    MathLover1

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    12.
    ad one more line
    x= ln(1/3)=-ln(3)

    14 and 16 correct
     
    MathLover1, Oct 22, 2021
    #2
    nycmathguy likes this.
  3. nycmathguy

    nycmathguy

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    nycmathguy, Oct 22, 2021
    #3
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