Rewriting expression of logarithm

In summary, the purpose of rewriting expressions of logarithms is to simplify them and make them easier to work with in mathematical calculations. This also allows for easier comparison and manipulation of logarithmic expressions. To rewrite a logarithmic expression with a different base, you can use the change of base formula. Logarithmic expressions can be rewritten as exponential expressions, and vice versa, since they are inverse operations. The process for rewriting a logarithmic expression as a single logarithm involves using properties such as the product, quotient, and power rules. However, there are restrictions when rewriting expressions of logarithms, such as the argument and base of the logarithm must be greater than 0 and not equal to 1. Additionally, when using the change of
  • #1
nlsed
10
0

Homework Statement


Rewrite the expression as a sum, difference or multiple of logs.

log55x2

Homework Equations





The Attempt at a Solution



log55x2 =
2log55x =
...
 
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  • #2
That's not the right first, step. What do you know about the addition of logs? If that doesn't help, substitute a = 5 and b = x2 and re-ask my question.

The Bob
 
  • #3
ooh~
log55 + log5x2 =
1+log5x2 =
1 + 2log5x2!
thank you so much
 
  • #4
Make that 1 + 2log5x and you're there.
 

1. What is the purpose of rewriting expressions of logarithms?

The purpose of rewriting expressions of logarithms is to simplify them and make them easier to work with in mathematical calculations. It also allows for easier comparison and manipulation of logarithmic expressions.

2. How do you rewrite a logarithmic expression with a different base?

To rewrite a logarithmic expression with a different base, you can use the change of base formula, which states that logb(x) = loga(x) / loga(b). This allows you to convert a logarithm with any base to a logarithm with a different base.

3. Can logarithmic expressions be rewritten as exponential expressions?

Yes, logarithmic expressions can be rewritten as exponential expressions and vice versa. This is because the logarithm and exponential functions are inverse operations of each other.

4. What is the process for rewriting a logarithmic expression as a single logarithm?

To rewrite a logarithmic expression as a single logarithm, you can use the properties of logarithms, such as the product, quotient, and power rules. These rules allow you to combine multiple logarithms into a single logarithm with a simplified expression.

5. Are there any restrictions when rewriting expressions of logarithms?

Yes, there are restrictions when rewriting expressions of logarithms. The argument of a logarithm must always be greater than 0, and the base of a logarithm must be greater than 0 and not equal to 1. Additionally, when using the change of base formula, the base of the new logarithm must also be greater than 0 and not equal to 1.

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