Logarithmic Equations and Exponents

The video tutorial explains how to solve a logarithmic equation involving a nested log expression. It begins by introducing the problem and suggesting a substitution method to simplify the equation. The variable U is introduced to represent the inner log expression, and the equation is rewritten in terms of U. The tutorial then demonstrates how to solve for U by converting the log equation into an exponential form. After finding the value of U, the substitution is reversed to solve for X. The solution is presented both in its exact form and as a decimal approximation, providing a comprehensive understanding of the process.

What is the first step in solving the given logarithmic equation?

• Using a calculator

• Performing a substitution

• Directly solving for x

• Converting to a quadratic equation

What does the variable 'U' represent in the substitution?

• The interlog expression log base 5 of x

• The solution to the equation

• The exponent in the equation

• The base of the logarithm

Tags

CCSS.HSF.BF.B.5

How is the equation log base 5 of U = -1 rewritten?

• U = -5^1

• U = 1/5

• U = 5^-1

• U = 5^1

After solving for U, what is the next step?

• Finding the decimal approximation

• Graphing the equation

• Substituting back to solve for x

• Checking the solution

Tags

CCSS.HSF.BF.B.5

What is the exponential form of the equation 1/5 = log base 5 of x?

• x = 5^-1

• x = 5^1/5

• x = 5^5

• x = 5^1

What is the relationship between x to the 1/5th power and the 5th root of 5?

• They are inverses

• They are equal

• They are unrelated

• They are reciprocals

What is the decimal approximation of 5 to the 1/5th power?

• 1.6789

• 1.5678

• 1.3797

• 1.2345

What is the purpose of finding a decimal approximation in this context?

• To check the accuracy of the solution

• To simplify the equation

• To verify the base of the logarithm

• To convert the solution to a fraction

Which of the following is the correct expression for x in terms of a root?

• x is the 10th root of 5

• x is the 5th root of 5

• x is the cube root of 5

• x is the square root of 5