Solving Logarithmic Equations Questions 4

In this page solving logarithmic equations questions 4 we are going to see solution of fourth problem from the worksheet. After understand the steps you can try other question listed below.

For solving any critical questions in this topic we have to remember the following points listed below.

Points to remember:

• Consider whether the given logarithmic terms are having same base. If they don’t have same base we have to make them with same base.
• If  there is any number before log we have to write them as power using power formula
• Combine them using logarithmic formulas
• If two log terms is being both sides of equal symbol we can equalize the number without log.

Let us see different type of problems to understand this topic better.

Question 4

Find the value of x 

log₄ x x log₄ 16 = log₄ 256

Solution

          log₄ x x log₄ 16 = log₄ 256

          log₄ x x log₄ 4² = log₄ 256

          log₄ x x 2log₄ 4 = log₄ 256

          log₄ x x 2(1) = log₄ 256

                 2 log₄ x = log₄ 256

                  log₄ x² = log₄ 256

                        x² = 256

                        x = √256

                        x = √16 x 16

                        x = 16 

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