The functions a(x) and b(x) are differentiable. The function w(x) is defined as: w(x)=b(x)a(x) If a(5)=2, a′(5)=1, b(5)=4, and b′(5)=2, what is w′(5)? Simplify any fractions. w′(5)=
Q. The functions a(x) and b(x) are differentiable. The function w(x) is defined as: w(x)=b(x)a(x) If a(5)=2, a′(5)=1, b(5)=4, and b′(5)=2, what is w′(5)? Simplify any fractions. w′(5)=
Given function: We are given the function w(x)=b(x)a(x) and we need to find the derivative of w at x=5, denoted as w′(5). To do this, we will use the quotient rule for derivatives, which states that if w(x)=v(x)u(x), then w′(x)=(v(x))2u′(x)v(x)−u(x)v′(x). Here, u(x)=a(x) and v(x)=b(x).
Quotient rule for derivatives: We are given a(5)=2, a′(5)=1, b(5)=4, and b′(5)=2. We will substitute these values into the quotient rule formula.
Substituting given values: Applying the quotient rule, we get w′(5)=(b(5))2a′(5)b(5)−a(5)b′(5).
Calculating w′(5): Substituting the given values, we have w′(5)=(1⋅4−2⋅2)/(4)2.
Simplifying the result: Performing the calculations, we get w′(5)=16(4−4).
Simplifying the result: Performing the calculations, we get w′(5)=164−4. Simplifying the result, we find w′(5)=160, which simplifies to 0.
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