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Which statement best describes the limit shown below?

lim_(x rarr oo)(2x^(16)-3x^(24))/(-2x^(24)+log_(5)x)
The limit equals zero
The limit does not exist
The limit exists and does not equal zero

Which statement best describes the limit shown below?\newlinelimx2x163x242x24+log5x \lim _{x \rightarrow \infty} \frac{2 x^{16}-3 x^{24}}{-2 x^{24}+\log _{5} x} \newlineThe limit equals zero\newlineThe limit does not exist\newlineThe limit exists and does not equal zero

Full solution

Q. Which statement best describes the limit shown below?\newlinelimx2x163x242x24+log5x \lim _{x \rightarrow \infty} \frac{2 x^{16}-3 x^{24}}{-2 x^{24}+\log _{5} x} \newlineThe limit equals zero\newlineThe limit does not exist\newlineThe limit exists and does not equal zero
  1. Analyze Behavior as xx Approaches Infinity: We need to analyze the behavior of the function as xx approaches infinity. To do this, we will compare the degrees of the polynomials in the numerator and the denominator.
  2. Compare Highest Degree Terms: The highest degree term in the numerator is 3x24-3x^{24} and in the denominator is 2x24-2x^{24}. As xx approaches infinity, the terms with lower degrees become insignificant compared to the highest degree terms.
  3. Simplify by Dividing Highest Power: We can simplify the limit by dividing both the numerator and the denominator by x24x^{24}, the highest power of xx present in the expression.\newlinelimx2x163x242x24+log5x=limx2x832+log5xx24\lim_{x \to \infty}\frac{2x^{16}-3x^{24}}{-2x^{24}+\log_{5}x} = \lim_{x \to \infty}\frac{\frac{2}{x^{8}}-3}{-2+\frac{\log_{5}x}{x^{24}}}
  4. Simplify as xx Approaches Infinity: As xx approaches infinity, 2x8\frac{2}{x^{8}} and log5xx24\frac{\log_{5}x}{x^{24}} both approach 00. Therefore, the limit simplifies to: limx(32)=32\lim_{x \rightarrow \infty}\left(\frac{-3}{-2}\right) = \frac{3}{2}
  5. Conclusion: The limit exists and does not equal zero. The correct statement is "The limit exists and does not equal 00."

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