(1/3)^sinxln1/3*cosx=0
cosx=0
x=П/2+2Пk
y(min)=(1/3)^1=1/3
(3x-3)(5x+2)-(15+13x-6)≤0
15-9x-6-15-13x+6≤0
-22x≤0
22x≥0
x є [ 0; +∞ )