Math Problem Statement

lim x^15 + 1/x^9 + 1

Solution

It seems you're asking for the limit of the following expression:

limx(x15+1x9+1)\lim_{x \to \infty} \left( x^{15} + \frac{1}{x^9} + 1 \right)

Step-by-step solution:

  1. As xx \to \infty, consider the behavior of each term:

    • x15x^{15}: As xx \to \infty, x15x^{15} grows very large.
    • 1x9\frac{1}{x^9}: As xx \to \infty, 1x9\frac{1}{x^9} tends to 0 because the denominator grows much faster than the numerator.
    • 11: This term remains constant.
  2. Dominant term: As xx \to \infty, x15x^{15} dominates the expression because it grows much faster than the other terms, and the term 1x9\frac{1}{x^9} approaches 0.

  3. Conclusion: Therefore, the limit is dominated by the x15x^{15} term, and we get:

    limx(x15+1x9+1)=\lim_{x \to \infty} \left( x^{15} + \frac{1}{x^9} + 1 \right) = \infty

Final Answer:

limx(x15+1x9+1)=\lim_{x \to \infty} \left( x^{15} + \frac{1}{x^9} + 1 \right) = \infty

Would you like more details on this? Here are 5 related questions:

  1. What happens if the limit is evaluated as x0x \to 0 instead of infinity?
  2. How does the dominant term affect limits in general?
  3. What is the limit behavior of 1xn\frac{1}{x^n} as xx \to \infty?
  4. How can L'Hopital's rule apply to limits involving infinity?
  5. How do powers of xx affect the growth rates of functions?

Tip: Always analyze each term separately when taking limits, focusing on which terms grow faster or slower.

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Math Problem Analysis

Mathematical Concepts

Limits
Asymptotic Behavior
Infinity

Formulas

Limit of a function as x approaches infinity

Theorems

Dominance of terms in limits
Limit behavior of x^n and 1/x^n

Suitable Grade Level

Grades 10-12