Math Problem Statement

Simplify the expression: (a + 1) / log_(n^3 - n) n + (a - 2) / log_n n

Solution

The given expression is:

a+1logn3nn+a2lognn.\frac{a+1}{\log_{n^3 - n} n} + \frac{a-2}{\log_{n} n}.

Step-by-step solution:

  1. Simplifying the Logarithms:

    • The term logn3nn\log_{n^3 - n} n can be simplified using the change of base formula for logarithms. The change of base formula states: logba=logalogb.\log_{b} a = \frac{\log a}{\log b}. Therefore: logn3nn=lognlog(n3n).\log_{n^3 - n} n = \frac{\log n}{\log(n^3 - n)}.
  2. Simplifying lognn\log_n n:

    • The logarithm lognn\log_{n} n is always 1 because: lognn=1.\log_n n = 1.
  3. Substitute into the Expression:

    • Now substitute the simplifications back into the expression: a+1lognlog(n3n)+a21.\frac{a+1}{\frac{\log n}{\log(n^3 - n)}} + \frac{a-2}{1}.
    • This can be further simplified by multiplying both numerator and denominator of the first term by log(n3n)\log(n^3 - n): (a+1)log(n3n)logn+(a2).(a+1) \frac{\log(n^3 - n)}{\log n} + (a-2).

Final Expression:

The simplified expression becomes: (a+1)log(n3n)logn+(a2).(a+1) \frac{\log(n^3 - n)}{\log n} + (a-2).


Would you like to explore further details or have any additional questions on this?

Here are 5 related questions:

  1. How do logarithmic properties simplify complex expressions?
  2. What is the change of base formula and its applications?
  3. Can logarithms of different bases always be converted using common logarithms?
  4. What are common logarithmic identities useful in calculus and algebra?
  5. How do you handle logarithms involving polynomials or exponential expressions?

Tip: When working with logarithms, remember to check for any special cases (like logbb=1\log_b b = 1) that can simplify your calculations.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Change of Base Formula
Simplification

Formulas

Change of base formula: log_b a = log a / log b
log_b b = 1

Theorems

Change of Base Theorem
Logarithmic Identity: log_b b = 1

Suitable Grade Level

Grades 10-12