turunan pertama dari f(x)=2x-1/x+2

f(x) = 2x - 1/x + 1
f(x) = u/v
f'(x) = u'v - uv'/ v²
mis u = 2x - 1
u'=2
v= x + 2
v'= 1

f'(x)= 2( x + 2) - 2x - 1 (1) / ( x + 2)²
f'(x) = 2x + 4 - 2x - 1 / (x+2)²
f'(x) = 2x - 2x + 4 - 1/(x+ 2)²
f'(x) = 3/(x+2)²
f'(x) = 3/x² + 4x + 4

semoga membantu