bjr
f : triple => f(x) = 3x
g : quart => g(x) = 1/4x
h : carré => h(x) = x²
f(2) = 3*2 = 6
g(2) = 1/4 * 2 = 1/2 = 0,5
h(2) = 2² = 4
f(-9) = 3 * (-9) = -27
g(-9) = 1/4 * (-9) = -9/4 = -2,25
h(-9) = (-9)² = 81
f(x) = 3 * x
g(x) = x : 4
h(x) = x * x
f(-7) = 3 * (-7) = -21
g(1) = 1/4 * 1 = 1/4
h(-2) = (-2)² = 4
f(1/3) = 3 * 1/3 = 1
g(-4) = -4 * 1/4 = -1
h(0,5) = 0,5² = 0,25
