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Gunakan aturan rantai untuk menentukan w / u dan w / v dari fungsi berikut ini: w = x 3 + y 3 , x

  1. Gunakan aturan rantai untuk menentukan w/udan w/v dari fungsi berikut ini:

w = x3 + y3, x = u2 + v2, y = 2uv

w = ex cos y, x = ln (u2 + v2), y = uv

2. Carilah titik ekstrim dari fungsi f(x,y) = x3 - 3xy + y3 + 3 dan tentukan jenisnya.

3. Misalkan x, y dan z adalah bilangan real positif yang jumlah ketiganya adalah 500. Tentukan nilai x, y dan z agar hasil perkalian ketiga bilangan tersebut maximum.

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