jika f(x) = 6x-2x^2, maka nilai dari limit h ---->0 f(x+h) - f(x) -------------- h

f'(x) = [tex]-2 . 2x^{2 - 1} + 6 . 1 x^{1 - 1} [/tex]
       = [tex]-4 x^{1} + 6[/tex]

pake cara turunan aja biar lebih cepat

Limit
kls eleven

lim f(x+h) - f(x) / h
h-> 0

f(x + h) - f(x) / h
=( 6(x+h) - 2(x+h)² ) - (6x - 2x²) /h
= ((6x + 6h - 2(x²+2xh+h²)) - 6x + 2x²)/h
= (6x+6h-2x²-4xh-2h²-6x+2x²) / h
= (6h - 4xh - 2h²) / h
= 6 - 4x - 2h
= 6 - 4x - 2(0)
= 6 - 4x