Fungsi turunan Jika f(x) = (x2 +3) / (2x + 1) maka tentukan : a) f’(x) b) f(0) + 2f’(0)

f(x) = (x² +3) / (2x+1)
u = x²+3 , u'= 2x
v = 2x+1 , v' = 2

f(0)= 3/1 = 3

f '(x) = (u'v - uv') / (v²)
f '(x) = {2x(2x+1) - (x²+3)(2)} / (2x+1)²

f'(0) = (0 - 6)/(1)²= - 6
f(0) + 2. f'(0) = 2 + 2(-6) = -10