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Find 
(d)/(dw)(w^(2)+5cos w)
Answer:

Find ddw(w2+5cosw) \frac{d}{d w}\left(w^{2}+5 \cos w\right) \newlineAnswer:

Full solution

Q. Find ddw(w2+5cosw) \frac{d}{d w}\left(w^{2}+5 \cos w\right) \newlineAnswer:
  1. Given function: We are given the function f(w)=w2+5cos(w)f(w) = w^2 + 5\cos(w) and we need to find its derivative with respect to ww, which is denoted as ddw(w2+5cos(w))\frac{d}{dw}(w^2 + 5\cos(w)).
  2. Sum rule application: To find the derivative of the function, we will apply the sum rule of differentiation, which states that the derivative of a sum of functions is the sum of their derivatives. We will also use the power rule for the w2w^2 term and the chain rule for the 5cos(w)5\cos(w) term.
  3. Derivative of w2w^2: First, let's find the derivative of the first term, w2w^2. Using the power rule, which states that the derivative of wnw^n is nw(n1)n*w^{(n-1)}, we get:\newline(d/dw)(w2)=2w(d/dw)(w^2) = 2w
  4. Derivative of 5cos(w)5\cos(w): Now, let's find the derivative of the second term, 5cos(w)5\cos(w). The derivative of cos(w)\cos(w) with respect to ww is sin(w)-\sin(w), and since we have a constant multiple of 55, we use the constant multiple rule to get:\newline(ddw)(5cos(w))=5×(ddw)(cos(w))=5×(sin(w))=5sin(w)(\frac{d}{dw})(5\cos(w)) = 5 \times (\frac{d}{dw})(\cos(w)) = 5 \times (-\sin(w)) = -5\sin(w)
  5. Combining derivatives: Combining the derivatives of both terms, we get the derivative of the entire function: \newline(ddw)(w2+5cos(w))=(ddw)(w2)+(ddw)(5cos(w))=2w5sin(w)(\frac{d}{dw})(w^2 + 5\cos(w)) = (\frac{d}{dw})(w^2) + (\frac{d}{dw})(5\cos(w)) = 2w - 5\sin(w)

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