а)f(-3) = 3 - 2(-3) = 3 + 6 = 9f(0) = 3 - 2(0) = 3f(2.5) = 3 - 2(2.5) = 3 - 5 = -2
б)Для f(x) = -17:-17 = 3 - 2x-20 = -2xx = 10
Для f(x) = 0:0 = 3 - 2x2x = 3x = 3/2
Для f(x) = 117:117 = 3 - 2x114 = -2xx = -57
а)
f(-3) = 3 - 2(-3) = 3 + 6 = 9
f(0) = 3 - 2(0) = 3
f(2.5) = 3 - 2(2.5) = 3 - 5 = -2
б)
Для f(x) = -17:
-17 = 3 - 2x
-20 = -2x
x = 10
Для f(x) = 0:
0 = 3 - 2x
2x = 3
x = 3/2
Для f(x) = 117:
117 = 3 - 2x
114 = -2x
x = -57