a) u = 1, u' = 0
v= 5x+4 , v' = 5
alternativ:
1/(5x+4) = (5x+4)^-1 -> f '(x) = -1*(5x+4)^-2*5 = -5/(5x+4)^2
b) u= x+1 , u' = 1
v= 3x-1, v'= 4
c) u= x^2-2x+3, u' = 2x-2
v= (2x+4)^2, v' = 2(2x+4)*2 = 4(2x+4)
d) u= (ax+b)^2, u'= 2a(ax+b
v=bx^2-a, v'= 2bx