Just use the product/quotient rules:
(fg)' = f'g + fg' = 6*2 + 4*5 = 32
(f/g)' = (f'g - fg')/g^2 = (12-20)/4 = -2
If f(3) =4 g(3)=2 f'(3)=6 and g'(3)=5
find the following numbers
a)
(fg)' (3)
b)
(f/g)' (3)
1 answer