Question

50 БАЛЛОВ решить
2^(x-1)+2^(x+3)>17

Answer 1

2^[x-1]+2^[x+3]>17
0.5*2^[x] + 8*2^[x] >17
8.5*2^[x]>17
2^[x]>2
x>1

x ∈ (1;+ω)