Math Problem Statement

solve please

أي مما يلي هو التعبير المناسب لـ log_6 4 ؟

Solution

To find the correct equivalent expression for log64\log_6 4, let’s go through the options and analyze each one.

We need to express log64\log_6 4 using the change of base formula. The change of base formula states:

logab=logcblogca\log_a b = \frac{\log_c b}{\log_c a}

Using this formula, we can rewrite log64\log_6 4 as:

log64=log4log6\log_6 4 = \frac{\log 4}{\log 6}

Now let's evaluate each option:

  1. Option (A): log6log4\frac{\log 6}{\log 4}
    This is the reciprocal of what we want, so it is incorrect.

  2. Option (B): log4+log6\log 4 + \log 6
    This would be equivalent to log(4×6)=log24\log (4 \times 6) = \log 24, not log64\log_6 4, so it is incorrect.

  3. Option (C): log24\log 24
    This also represents log(4×6)\log (4 \times 6) and not log64\log_6 4, so it is incorrect.

  4. Option (D): log4log6\frac{\log 4}{\log 6}
    This matches the expression we derived using the change of base formula, so it is correct.

Answer:

The correct answer is Option (D) log4log6\frac{\log 4}{\log 6}.


Would you like a further explanation or have any questions?

Related Questions

  1. How does the change of base formula work for logarithmic expressions?
  2. Can logab\log_a b be simplified if both aa and bb are powers of the same number?
  3. What are some applications of logarithms in real-world problems?
  4. How can logarithmic properties help in solving exponential equations?
  5. How do you determine the base of a logarithm if it’s not specified?

Tip:

Always remember the change of base formula when converting between different logarithmic bases—it’s a very useful tool for simplifying and solving logarithmic expressions.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Change of Base Formula

Formulas

log_a b = (log_c b) / (log_c a)

Theorems

Change of Base Theorem

Suitable Grade Level

Grades 10-12