Which statement best describes the limit shown below?x→∞lim−x344exThe limit equals zeroThe limit does not existThe limit exists and does not equal zero
Q. Which statement best describes the limit shown below?x→∞lim−x344exThe limit equals zeroThe limit does not existThe limit exists and does not equal zero
Analyze Function: Analyze the given function.We are given the function (4ex)/(−x34) and we need to find the limit as x approaches infinity. We notice that the numerator grows exponentially with x, while the denominator grows polynomially with a very high degree (34).
Compare Growth Rates: Compare the rates of growth of the numerator and the denominator.The exponential function ex grows faster than any polynomial function as x approaches infinity. However, the degree of the polynomial in the denominator is significantly higher than the exponent in the numerator, which suggests that the denominator will eventually outgrow the numerator as x becomes very large.
Apply Limits: Apply the concept of limits to the function.As x approaches infinity, the exponential term ex becomes very large, but the polynomial term x34 becomes much larger. Since the denominator grows faster than the numerator, the fraction as a whole approaches zero.
Conclude Limit: Conclude the limit.The limit of −x344ex as x approaches infinity is zero because the denominator's growth rate is much higher than that of the numerator.