Solving a logarithmic equation by converting equation to exponential form

Solving a logarithmic equation by converting equation to exponential form

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to solve a logarithmic equation where two times log base 4 of X equals 1. The instructor discusses two methods: using the one-to-one property or converting to exponential form. The logarithm is rewritten by applying logarithmic rules, allowing conversion to exponential form. The solution is found by solving the equation, emphasizing the importance of considering only positive values, as negative results are not valid in this context.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial equation presented in the problem?

4 times log base 2 of X = 1

log base 2 of X = 4

2 times log base 4 of X = 1

log base 4 of X = 2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is NOT mentioned as a way to solve the equation?

Using the one-to-one property

Converting to exponential form

Using the quadratic formula

Applying logarithmic rules

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in converting the logarithmic equation to exponential form?

Subtract 1 from both sides

Add 2 to both sides

Rewrite the multiplier as a power

Divide both sides by 2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the negative solution not considered valid in this context?

Because it does not satisfy the original equation

Because it results in a complex number

Because it leads to a division by zero

Because logarithms cannot be negative

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final solution for X in the equation?

X = 2

X = 0

X = 4

X = -2