bonjour
f(x) = 3x2+4x-2
f ' (x) = 6 x + 4
i(x) = 3x^3+25x2-13x+6
i ' ( x) = 9 x² + 50 x - 13
g(x) = -12x2+6x-9
g '(x) = - 24 x + 6
j(x) = 25x^3-98x2+65x-9875
j' (x) = 75 x² - 196 x + 65
h(x=) = 25x2-98x+125458745874
h ' (x) = 50 x - 98
k(x) = 12x^4-12x^3+2x2-4x+1
k '(x) = 48 x ³ - 36 x² + 4 x - 4
