The functions f(x) and g(x) are differentiable. The function h(x) is defined as: h(x)=g(x)f(x) If f(−1)=6, f′(−1)=−3, g(−1)=2, and g′(−1)=5, what is h′(−1)?
Q. The functions f(x) and g(x) are differentiable. The function h(x) is defined as: h(x)=g(x)f(x) If f(−1)=6, f′(−1)=−3, g(−1)=2, and g′(−1)=5, what is h′(−1)?
Use Quotient Rule: Step 1: Use the quotient rule to find h′(x). The quotient rule states that if h(x)=g(x)f(x), then h′(x)=(g(x))2f′(x)g(x)−f(x)g′(x).
Substitute Given Values: Step 2: Substitute the given values into the derivative formula. Plugging in f(−1)=6, f′(−1)=−3, g(−1)=2, and g′(−1)=5 into the formula from Step 1:h′(−1)=((−3)(2)−(6)(5))/(2)2.
Perform Calculations: Step 3: Perform the calculations:h′(−1)=(−6−30)/4=−36/4=−9.
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