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Which statement best describes the limit shown below?

lim_(x rarr oo)(x^(37))/(log_(4)x+4^(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?\newlinelimxx37log4x+4x \lim _{x \rightarrow \infty} \frac{x^{37}}{\log _{4} x+4^{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?\newlinelimxx37log4x+4x \lim _{x \rightarrow \infty} \frac{x^{37}}{\log _{4} x+4^{x}} \newlineThe limit equals zero\newlineThe limit does not exist\newlineThe limit exists and does not equal zero
  1. Analyze Function Behavior: We need to analyze the behavior of the function x37log4(x)+4x\frac{x^{37}}{\log_{4}(x) + 4^{x}} as xx approaches infinity. To do this, we will compare the growth rates of the numerator and the denominator.
  2. Numerator Growth Rate: The numerator x37x^{37} is a polynomial function of degree 3737, which grows very quickly as xx becomes large.
  3. Denominator Comparison: The denominator is the sum of log4(x)\log_4(x) and 4x4^x. The logarithmic function log4(x)\log_4(x) grows slowly compared to the exponential function 4x4^x. Therefore, as xx approaches infinity, the 4x4^x term will dominate the denominator.
  4. Dominant Term: Since the exponential function 4x4^x grows much faster than the polynomial function x37x^{37}, the denominator will increase much more rapidly than the numerator as xx approaches infinity.
  5. Approaching Infinity: As a result, the fraction (x37)/(log4(x)+4x)(x^{37})/(\log_4(x) + 4^x) will approach zero because the numerator becomes insignificant compared to the rapidly increasing denominator.
  6. Limit Statement: Therefore, the correct statement that describes the limit is: "The limit equals 00."

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