Răspuns:
Explicație pas cu pas:
f(x) = (3 - x)/2
f(-1) = (3 + 1)/2 = 4/2 = 2
f(-2) = (3 + 2)/2 = 5/2
f(2) = (3 - 2)/2 = 1/2
2 + 5/2×1/2 = 2 + 5/4 = 8/4 + 5/4 = 13/4
_____________
f(1/2) = (3 - 1/2)/2 = (6/2 - 1/2)/2 = (5/2)/2 = 5/4
f(2/3) = (3 - 2/3)/2 = (9/3 - 2/3)/2 = (7/3)/2 = 7/6
5/4×7/6 = 35/24