All High School Math Resources
Example Question #1 : Multiplying And Dividing Logarithms
Using properties of logs we get:
Example Question #2 : Simplifying Logarithms
Simplify the following expression:
Recall the log rule:
In this particular case, and . Thus, our answer is .
Example Question #3 : Simplifying Logarithms
Use the properties of logarithms to solve the following equation:
No real solutions
Since the bases of the logs are the same and the logarithms are added, the arguments can be multiplied together. We then simplify the right side of the equation:
The logarithm can be converted to exponential form:
Factor the equation:
Although there are two solutions to the equation, logarithms cannot be negative. Therefore, the only real solution is .
Example Question #4 : Simplifying Logarithms
Simplify the expression using logarithmic identities.
Cannot be simplified
The logarithm of a fraction is equal to the logarithm of the numerator minus the logarithm of the denominator.
If we encounter two logarithms with the same base, we can likely combine them. In this case, we can use the reverse of the above identity.
Example Question #5 : Simplifying Logarithms
Which of the following represents a simplified form of ?
The rule for the addition of logarithms is as follows:
As an application of this,.