Turunan pertama fungsi f(x)=2x-1 per 1-x adalah

Kelas 11 Matematika
Bab Turunan

f(x) = u/v
f'(x) = (u' v - u v')/v²

f(x) = (2x - 1)/(1 - x)
f'(x) = (2 . (1 - x) - (2x - 1) . (-1))/(1 - x)²
f'(x) = (2 - 2x + 2x - 1) / (1 - x)²
f'(x) = 1/(1 - 2x + x)