Odpowiedź:d .f(7) = 9Szczegółowe wyjaśnienie:f(x) = 2x - 5a)f(0) = - 1-1 = 2 * 0 - 5- 1= 0 - 5- 1 =/= -5Fałszb)f(2) = 55 = 2 * 2 - 55 = 4 - 55 =/= -1Fałszc)f(5) = 00 = 2 * 5 - 50 = 10 - 50=/= 5Fałszd)f(7) = 99 = 2 * 7 - 59 = 14 - 59 = 9Prawda.
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Odpowiedź:
d .f(7) = 9
Szczegółowe wyjaśnienie:
f(x) = 2x - 5
a)
f(0) = - 1
-1 = 2 * 0 - 5
- 1= 0 - 5
- 1 =/= -5
Fałsz
b)
f(2) = 5
5 = 2 * 2 - 5
5 = 4 - 5
5 =/= -1
Fałsz
c)
f(5) = 0
0 = 2 * 5 - 5
0 = 10 - 5
0=/= 5
Fałsz
d)
f(7) = 9
9 = 2 * 7 - 5
9 = 14 - 5
9 = 9
Prawda.