Logarithm Problem Set 1

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Annacabral
A
Annacabral
Community Contributor
Quizzes Created: 29 | Total Attempts: 21,620
| Attempts: 1,269 | Questions: 10
Please wait...
Question 1 / 10
0 %
0/100
Score 0/100
1. Solve for x:

logx64=2

Explanation

The equation logx64=2 can be rewritten as x^2=64. Taking the square root of both sides, we find that x=±8. However, since the logarithm function is only defined for positive values of x, the only valid solution is x=8.

Submit
Please wait...
About This Quiz
Logarithm Problem Set 1 - Quiz

This Logarithm Problem Set 1 assesses understanding of logarithmic functions and equations. It includes solving logarithms with various bases and converting logarithmic expressions to exponential forms, essential for... see morestudents mastering algebra. see less

2. Evaluate:
log416

Explanation

The given expression is asking for the logarithm of 416 base 2. To evaluate this, we need to find the exponent to which 2 must be raised to get 416. Since 2^8 = 256 and 2^9 = 512, we know that 416 is between these two powers of 2. Therefore, the answer is 8.

Submit
3. Solve for x:

log4x=3

Explanation

To solve the equation log4x = 3, we need to rewrite it in exponential form. Since the base of the logarithm is 4, we can rewrite it as 4^3 = x. Simplifying this equation gives us x = 64. Therefore, the value of x that satisfies the equation is 64.

Submit
4. Evaluate:
log6(1/36)

Explanation

The given expression is evaluating the logarithm of 1/36 to the base 6. The logarithm of a number is the exponent to which the base must be raised to obtain that number. In this case, we need to find the exponent that 6 must be raised to in order to get 1/36. Since 6 raised to the power of -2 equals 1/36, the answer is -2.

Submit
5. Solve for x:

log3x=-2
Enter answer as a fraction or as a decimal to the thousandths place.

Explanation

The correct answer is 1/9, 0.111, .111.

To solve the equation log3x = -2, we need to rewrite it in exponential form. Since the base of the logarithm is 3, we can rewrite it as 3^-2 = x. Simplifying this, we get x = 1/9. Therefore, the answer is 1/9.

Additionally, 1/9 can be expressed as a decimal, which is 0.111 when rounded to the thousandths place. Hence, both 0.111 and .111 are also correct answers.

Submit
6. Log(1/2)8=x

Explanation

The equation log base 1/2 of 8 equals x can be rewritten as 1/2 raised to the power of x equals 8. To find the value of x, we need to determine what exponent, when 1/2 is raised to that power, gives us 8. In this case, x equals -3 because 1/2 raised to the power of -3 is equal to 8.

Submit
7.


Evaluate:

Enter answer as an improper fraction or a decimal

Explanation

The given question asks to evaluate the expression 3/2. The answer is both 3/2 and 1.5 because they represent the same value. 3/2 is an improper fraction, where the numerator (3) is greater than the denominator (2). On the other hand, 1.5 is a decimal representation of the same value. Both answers are correct and equivalent.

Submit
8. What is 5log5x equivalent to?

Explanation

The expression 5log5x can be simplified using the logarithmic property, which states that log_b(b^a) = a. In this case, the base of the logarithm is 5 and the exponent is x. Since the base and the logarithm are the same, the expression simplifies to x.

Submit
9. Which of the following is the inverse of the function f(x) = log(1/2)x?

A. f-1(x) = 2x
B. f-1(x) = (1/2)x
C. f-1(x) = x2
D. f-1(x) = x(1/2)
E. That function has no inverse.

Explanation

The correct answer is B because to find the inverse of a function, we switch the x and y variables and solve for y. In this case, we have f(x) = log(1/2)x. To find the inverse, we switch x and y to get x = log(1/2)y. Then, we solve for y by exponentiating both sides with base 2, which gives us 2^x = y. Therefore, the inverse function is f-1(x) = (1/2)x.

Submit
10. Which of the following is the correct inverse of the function f(x) = 4x ?

A. f-1(x) = x4
B. f-1(x) = x 1/4
C. f-1(x) = log4x
D. f-1(x) = log(1/4)x
E. This function has no inverse.

Explanation

The correct inverse of the function f(x) = 4x is f-1(x) = log4x. The inverse function undoes the original function, so when we apply the inverse function to the output of the original function, we should get back the input. In this case, if we apply f-1(x) = log4x to the output of f(x) = 4x, we get log4(4x) = x. Therefore, C is the correct answer.

Submit
View My Results

Quiz Review Timeline (Updated): Mar 20, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 11, 2010
    Quiz Created by
    Annacabral
Cancel
  • All
    All (10)
  • Unanswered
    Unanswered ()
  • Answered
    Answered ()
Solve for x:logx64=2
Evaluate: log416
Solve for x:log4x=3
Evaluate:log6(1/36)
Solve for x:log3x=-2Enter answer as a fraction or as a decimal to the...
Log(1/2)8=x
Evaluate:Enter answer as an improper fraction or a decimal
What is 5log5x equivalent to?
Which of the following is the inverse of the function f(x) =...
Which of the following is the correct inverse of the function f(x) =...
Alert!

Advertisement