Question

Tentukan pasangan koordinat dari
f:(x)= 5x-x² dengan domain {x|-1≤x≤7,x€R}

Answer 1

F(-1) = 5(-1) - (-1)²
= (-5) - 1
= (-6)
f(0) = 5.(0) - (0)²
= 0 - 0
= 0
f(1)= 5.1 - 1²
= 5 - 1 = 4
f(2) = 5.2 - 2²
= 10 - 4 = 6
f(3) = 5.3 - 3²
= 15 - 9 = 6
f(4) = 5.4 - 4²
= 20 - 16 = 4
f(5) = 5.5 - 5²
= 25 - 25 = 0
f(6) = 5.6 - 6²
= 30 - 36 = (-6)
f(7) = 5.7 - 7²
= 35 - 49
= (-14)