136 Logartihmic Equations

Last updated over 4 years ago
11 questions

Bell:

1

Solve (from yesterday)
(\frac{1}{262144})^{-x-8}=64^{2x-12}

hint: the base is 8

Notes L7-4

Solving Logarithmic Equations

1

The first step in solving a basic logarithmic equation is to use the base on both sides of the problem.

1

Put the steps in order to solve: \log_8(x)=2

  1. \log_8(x)=2
  2. 8^{\log_8(x)}=8^2
  3. x=64
1

Put the steps in order to solve: \log_x(81)=\frac{4}{3}

  1. \log_x(81)=\frac{4}{3}
  2. 81^\frac{3}{4}=(x^\frac{4}{3})^{\frac{3}{4}}
  3. 81=x^\frac{4}{3}
  4. x=27
  5. x^{\log_x(81)}=x^\frac{4}{3}
1

Solve: \log_{10}{x}=2

1

Solve \log_{x}{5}=\frac{1}{4}

1

Solve: \log_{x}{256}=4

1

Solve \log_{2}{256}=x

1

Solve: \log_{16}{x}=\frac{1}{2}

1

What is the first step when solving a basic logarithmic equation?

0

Choose all that are true

Don't forget DeltaMath: Ch7: Solving Equations/Inequalities
You can now do the first four sections.