Q. Find (f∘g)(−4) for the following functions.f(x)=4x−2 and g(x)=x2AnswerHow to enter your answer (opens in new window)(f∘g)(−4)=
Understand Function Composition: First, we need to understand what (f@g)(x) means. The notation (f@g)(x) represents the composition of the functions f and g, which means we first apply g to x, and then apply f to the result of g(x). So, (f@g)(x)=f(g(x)). Let's start by finding g(−4).
Calculate g(−4): Calculate g(−4) by substituting x with −4 in the function g(x)=x2.g(−4)=(−4)2=16.
Find (f@g)(−4): Now that we have g(−4), we can find (f@g)(−4) by applying f to the result of g(−4). So we need to substitute x with 16 in the function f(x)=4x−2.f(g(−4))=f(16)=4(16)−2.
Calculate f(16): Calculate f(16) by multiplying 4 with 16 and then subtracting 2.f(16)=4(16)−2=64−2=62.
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