Let g(x)=ln(x−2)x.Select the correct description of the one-sided limits of g at x=3.Choose 1 answer:(A) limx→3+g(x)=+∞ and limx→3−g(x)=+∞(B) limx→3+g(x)=+∞ and limx→3−g(x)=−∞(C) limx→3+g(x)=−∞ and limx→3−g(x)=+∞(D) limx→3+g(x)=−∞ and limx→3−g(x)=−∞
Q. Let g(x)=ln(x−2)x.Select the correct description of the one-sided limits of g at x=3.Choose 1 answer:(A) limx→3+g(x)=+∞ and limx→3−g(x)=+∞(B) limx→3+g(x)=+∞ and limx→3−g(x)=−∞(C) limx→3+g(x)=−∞ and limx→3−g(x)=+∞(D) limx→3+g(x)=−∞ and limx→3−g(x)=−∞
Understand the Function: Understand the function and the point of interest.We are given the function g(x)=ln(x−2)x and we need to find the one-sided limits as x approaches 3 from the right (x→3+) and from the left (x→3−).
Analyze Right Approach: Analyze the behavior of the function as x approaches 3 from the right (x→3+).As x approaches 3 from the right, the numerator x approaches 3, and the denominator ln(x−2) approaches ln(3−2) which is ln(1)=0. Since the natural logarithm of a number very close to 30 from the right is a very small positive number, the fraction31 will approach positive infinity.32
Analyze Left Approach: Analyze the behavior of the function as x approaches 3 from the left (x→3−).As x approaches 3 from the left, the numerator x approaches 3, and the denominator ln(x−2) approaches ln(3−2) which is ln(1)=0. However, since we are approaching from the left, 30 is slightly less than 31, and the natural logarithm of a number slightly less than 31 is negative and approaches negative infinity. Therefore, the fraction 33 will approach negative infinity.34