Which of the following functions are continuous at x=−3 ?h(x)=(x+3)21g(x)=(x−3)3Choose 1 answer:(A) h only(B) g only(C) Both h and g(D) Neither h nor g
Q. Which of the following functions are continuous at x=−3 ?h(x)=(x+3)21g(x)=(x−3)3Choose 1 answer:(A) h only(B) g only(C) Both h and g(D) Neither h nor g
Function h(x) Analysis: Analyze the function h(x)=((x+3)2)1 to determine if it is continuous at x=−3. We need to check if the function is defined at x=−3 and if there are any points of discontinuity around x=−3. Substitute x=−3 into h(x) to see if the function is defined. h(−3)=((−3+3)2)1=01, which is undefined. Since division by zero is undefined, the function h(x) has a point of discontinuity at x=−3.
Function g(x) Analysis: Analyze the function g(x)=(x−3)3 to determine if it is continuous at x=−3. We need to check if the function is defined at x=−3 and if there are any points of discontinuity around x=−3. Substitute x=−3 into g(x) to see if the function is defined. g(−3)=((−3)−3)3=(−6)3=−216, which is a real number. Since there is a real number result, the function g(x) is defined at x=−3 and there are no points of discontinuity.
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