Найдите множество значений функции
3-4*cosx
-1<=cosx<=1,
-4<=4cosx<=4,
-4<=-4cosx<=4,
3-4<=3-4cosx<=3+4,
-1<=3-4cosx<=7,
E=[-1;7]
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-1<=cosx<=1,
-4<=4cosx<=4,
-4<=-4cosx<=4,
3-4<=3-4cosx<=3+4,
-1<=3-4cosx<=7,
E=[-1;7]