1/6 < 6 ^ ( 3 -X ) ≤ 36
6 ^ ( - 1 ) < 6 ^ ( 3 - X) ≤ 6 ^ 2
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- 1 < 3 - X ≤ 2
- 1 - 3 < - X ≤ 2 - 3
- 4 < - X ≤ - 1
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4 > X ≥ 1
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1 2 3 4
Целые решения: 1 ; 2 ; 3
Sin( x+ pi/4) = 1/2;
x+ pi/4 = (-1)^k*pi/6 + pik;
x = (-1)^k* pi/6 - pi/ + pik; k-Z