The functions c(x) and d(x) are differentiable. The function r(x) is defined as: r(x)=d(x)c(x) If c(6)=7, c′(6)=5, d(6)=3, and d′(6)=−2, what is r′(6)? Simplify any fractions. r′(6)=
Q. The functions c(x) and d(x) are differentiable. The function r(x) is defined as: r(x)=d(x)c(x) If c(6)=7, c′(6)=5, d(6)=3, and d′(6)=−2, what is r′(6)? Simplify any fractions. r′(6)=
Given function: We are given the function r(x)=d(x)c(x) and we need to find the derivative of r at x=6, denoted as r′(6). To do this, we will use the quotient rule for derivatives, which states that if h(x)=g(x)f(x), then h′(x)=(g(x))2f′(x)g(x)−f(x)g′(x).
Applying quotient rule: We have c(6)=7, c′(6)=5, d(6)=3, and d′(6)=−2. Let's apply the quotient rule using these values:r′(6)=(d(6))2c′(6)d(6)−c(6)d′(6).
Substituting values: Substitute the given values into the quotient rule formula: r′(6)=(3)2(5⋅3−7⋅−2).
Performing multiplication: Perform the multiplication: r′(6)=915+14.
Adding numerator: Add the numbers in the numerator: r′(6)=929.
Final answer: The fraction929 is already simplified, so this is our final answer.
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