Which statement best describes the limit shown below?x→∞lim5log2x−3(2)xThe limit equals zeroThe limit does not existThe limit exists and does not equal zero
Q. Which statement best describes the limit shown below?x→∞lim5log2x−3(2)xThe limit equals zeroThe limit does not existThe limit exists and does not equal zero
Given Limit Expression: We are given the limit expression limx→∞(5log2x−3(2)x). To analyze the behavior of this limit, we need to consider the growth rates of the numerator and the denominator as x approaches infinity.
Analysis of Growth Rates: The numerator −3(2)x grows exponentially as x approaches infinity. Exponential functions grow much faster than polynomial or logarithmic functions.
Numerator Behavior: The denominator 5log2x is a logarithmic function, which grows much slower than the exponential function in the numerator. As x approaches infinity, the logarithmic function increases without bound, but at a much slower rate than the exponential function.
Denominator Behavior: Since the numerator grows much faster than the denominator, the fraction as a whole will grow without bound. However, because the numerator is negative, the fraction will tend toward negative infinity.
Limit Conclusion: Therefore, the limit does not exist because the expression diverges to negative infinity. The correct statement is "The limit does not exist."