Which of the following functions are continuous for all real numbers?g(x)=2xf(x)=ln(x)Choose 1 answer:(A) g only(B) f only(C) Both g and f(D) Neither g nor f
Q. Which of the following functions are continuous for all real numbers?g(x)=2xf(x)=ln(x)Choose 1 answer:(A) g only(B) f only(C) Both g and f(D) Neither g nor f
Analyze g(x)=2x: Analyze the function g(x)=2x. The function g(x)=2x is an exponential function with a base greater than 1. Exponential functions are continuous for all real numbers because there are no breaks, jumps, or holes in the graph of an exponential function.
Analyze f(x)=ln(x): Analyze the function f(x)=ln(x). The function f(x)=ln(x) is the natural logarithm function. The domain of the natural logarithm function is (0,∞), which means it is only defined for positive real numbers. Therefore, f(x) is not continuous for all real numbers because it is not defined for x≤0.
Determine continuity: Determine which functions are continuous for all real numbers.Based on the analysis, g(x)=2x is continuous for all real numbers, while f(x)=ln(x) is not. Therefore, the correct choice is that only g(x) is continuous for all real numbers.
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