Anonymous
Anonymous asked in Science & MathematicsMathematics · 2 months ago

How to go about this (Calculus work)?

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  • 2 months ago

    1. V = W * L * h = 2x²h.  As V = 10, h = 5/(x²).

    2. C = $7 × (W * L)  + $3 × 2h(W + L) = $14x² + $90/x

     C' = $28x - $90/(x²)

    3. When C' = 0, 28x = 90/x², x³ = 90/28 = 45/14; x ≈1.476; h ≈ 2.295

    C ≈  $121.98

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