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Multiple Choice
Differentiate the function with respect to .
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Verified step by step guidance
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Step 1: Recognize that the function h(u) = (u - u^2)(u + u^2) is a product of two functions. To differentiate it, apply the product rule: (f * g)' = f' * g + f * g'.
Step 2: Identify the two functions in the product: f(u) = u - u^2 and g(u) = u + u^2. Compute their derivatives individually. For f(u), differentiate term by term: f'(u) = 1 - 2u. For g(u), differentiate term by term: g'(u) = 1 + 2u.
Step 3: Substitute f(u), f'(u), g(u), and g'(u) into the product rule formula: h'(u) = f'(u) * g(u) + f(u) * g'(u). This becomes h'(u) = (1 - 2u)(u + u^2) + (u - u^2)(1 + 2u).
Step 4: Expand both terms in the expression. For the first term, (1 - 2u)(u + u^2), distribute to get u + u^2 - 2u^2 - 2u^3. For the second term, (u - u^2)(1 + 2u), distribute to get u + 2u^2 - u^2 - 2u^3.
Step 5: Combine like terms from the expanded expression: h'(u) = (u + u - 2u^2 - u^2 + 2u^2 - 2u^3 - 2u^3). Simplify to get h'(u) = 1 + 2u - 2u^2 - 2u^3.