Turunan pertama dari y=(7x-4)6 adalah…

Gunakan teorema rantai ↓↓↓
Rumus:
dy/dx = dy/du . du/dv . dv/dx

Pembahasan:
Misal: u = (7x – 4)
Maka: y = u⁶

dy/du = 6u⁵ ; du/dx = 7

Jadi:
dy/dx = dy/du . du/dx
dy/dx = 6u⁵ . 7
dy/dx = 6(7x – 4)⁵ . 7
dy/dx = 42(7x – 4)⁵

Semoga benar y' = 1/5 (7x – 4)^5