Math Problem Statement

Evaluate the expression. (Simplify your answer completely.) (a) log3(3)

(b) log9(1)

(c) log6(65)

Solution

Let's evaluate each logarithmic expression step by step.


(a) log3(3)\log_3(3):

  • The logarithmic expression logb(x)\log_b(x) asks the question: "To what power must the base bb be raised to get xx?"
  • In this case, log3(3)\log_3(3) means: "To what power must 3 be raised to get 3?"
  • The answer is 11, since 31=33^1 = 3.

So, log3(3)=1\log_3(3) = 1.


(b) log9(1)\log_9(1):

  • Any logarithm of 1 is 0, regardless of the base. This is because any non-zero number raised to the power of 0 is 1.
  • Therefore, log9(1)=0\log_9(1) = 0, since 90=19^0 = 1.

So, log9(1)=0\log_9(1) = 0.


(c) log6(65)\log_6(65):

  • log6(65)\log_6(65) does not simplify to an exact integer since 65 is not a power of 6.
  • To express it in a different way or estimate it, we can use the change of base formula: logb(x)=log(x)log(b)\log_b(x) = \frac{\log(x)}{\log(b)}
  • Using this formula: log6(65)=log(65)log(6)\log_6(65) = \frac{\log(65)}{\log(6)} This would give a decimal approximation, but it's the exact way to express it algebraically.

Summary:

  • log3(3)=1\log_3(3) = 1
  • log9(1)=0\log_9(1) = 0
  • log6(65)=log(65)log(6)\log_6(65) = \frac{\log(65)}{\log(6)}

Would you like me to calculate the decimal approximation for part (c) or give more details on logarithmic properties?


Related Questions:

  1. What is log5(25)\log_5(25)?
  2. How do you simplify log7(49)\log_7(49)?
  3. What is the general formula for changing the base of a logarithm?
  4. How do you solve logarithmic equations like log2(x)=3\log_2(x) = 3?
  5. What is the value of log10(1000)\log_{10}(1000)?

Tip:

The logarithm of 1 in any base is always 0, since b0=1b^0 = 1 for any base bb.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Exponents
Change of Base Formula

Formulas

log_b(x) = y implies b^y = x
log_b(1) = 0 for any base b
Change of Base Formula: log_b(x) = log(x) / log(b)

Theorems

Exponentiation Theorem: b^0 = 1 for any non-zero base b
Logarithm Base Rule: log_b(b) = 1

Suitable Grade Level

Grades 9-12