Предмет: Математика, автор: ryabovolnastya

Найдите область определения и множество значений функции:
а)y = 1 + sin x
б)y = 8 cos x - 1

Ответы

Автор ответа: xERISx
0

а) y = 1 + sin x

-1leq sin xleq 1~~~~|+1\0leq 1+sin xleq 2\\boldsymbol{D(y)=R;~~E(y)=[0;2]}

б) y = 8 cos x - 1

-1leq cos xleq 1~~~~~~|cdot 8\-8leq 8cos xleq 8~~~~|-1\-9leq 8cos x-1leq 7\\boldsymbol{D(y)=R;~~E(y)=[-9;7]}

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