CAT Practice : Exponents and Logarithms

When we change the base, Log questions become far tougher.

Basic identities of Logarithm

    Q.7: Find x.

 

  • Correct Answer
    Choice C.

Detailed Solution


Let y =
We know that
Hence
Thus the equation can be written as


Solving the above equation we get
If y = 4

Then
If

Then


Correct Answer:



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More questions from Exponents and Logarithms

  1. Logarithm - Inequalities
  2. Logarithm - Simple
  3. Logartihm - Quadratic Equations
  4. Logartihm - Algebra
  5. Logarithm - Inequalities
  6. Logarithms - Different bases
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