Odpowiedź:
a)
f(x) = 4x - 1 dla x ∈ ( 1/2 ; 5/4)
f(1/2) = 4 * 1/2 - 1 = 2 - 1 = 1
f(5/4) = 4 * 5/4 - 1 = 5 - 1 = 4
f(x) dla x ∈ ( 1/2 ; 5/4) wynosi:
y ∈ ( 1 , 4 )
b)
f(x) = 3x² + 1 dla x = { - 3 , - 2 , - 1 , 0 , 1 , 2 , 3 }
f(- 3) = 3 * (- 3)² + 1 = 3 * 9 + 1 = 27 + 1 = 28
f(- 2) = 3 * (- 2)² + 1 = 3 * 4 + 1 = 12 + 1 = 13
f(- 1) = 3 * (- 1)² + 1 = 3 * 1 + 1 = 3 + 1 = 4
f(0) = 3 * 0² + 1 = 0 + 1 = 1
f(1) = 3 * 1² + 1 = 3 * 1 + 1 = 3 + 1 = 4
f(2) = 3 * 2² + 1 = 3 * 4 + 1 = 12 +1 = 13
f(3) = 3 * 3² + 1 = 3 * 9 + 1 = 27 + 1 = 28
