Q. Leth(x)={2x−121−x for x<1 for x≥1Is h continuous at x=1 ?Choose 1 answer:(A) Yes(B) No
Check Left Limit: To determine if h(x) is continuous at x=1, we need to check if the left-hand limit as x approaches 1, the right-hand limit as x approaches 1, and the value of the function at x=1 are all equal.
Calculate Left Limit: First, we calculate the left-hand limit, which is the limit of h(x) as x approaches 1 from the left. Since x < 1, we use the first part of the function definition: h(x)=2(x−1).So, we need to find the limit of 2(x−1) as x approaches 1 from the left.limx→1−2(x−1)=2(1−1)=20=1.
Calculate Right Limit: Next, we calculate the right-hand limit, which is the limit of h(x) as x approaches 1 from the right. Since x≥1, we use the second part of the function definition: h(x)=2(1−x).So, we need to find the limit of 2(1−x) as x approaches 1 from the right.limx→1+2(1−x)=2(1−1)=20=1.
Find Value at x=1: Now, we need to find the value of the function at x=1. Since x=1 is the point where the definition of the function changes, we need to check both parts of the function definition.For x < 1, h(x)=2(x−1), so h(1)=2(1−1)=20=1.For x≥1, h(x)=2(1−x), so h(1)=2(1−1)=20=1.Both parts of the function give the same value at x=1, which is x=10.
Check Continuity: Since the left-hand limit, the right-hand limit, and the value of the function at x=1 are all equal to 1, the function h(x) is continuous at x=1.