Question

Здравствуйте, помогите пожалуйста
1,9 и 1,10

Answer 1

Ответ:

$1.9)\ \ y=3^{x}\\\\-1\leq x\leq 3\ \ \ \Rightarrow \ \ \ \ 3^{-1}\leq 3^{x}\leq 3^3\ \ ,\ \ \ \underline {\ \dfrac{1}{3}\leq 3^{x}\leq 27\ }$

$1.10)\ \ \ y=\Big(\dfrac{1}{3}\Big)^{x}\\\\-2\leq x\leq 2\ \ \ \Rightarrow \ \ \ \Big(\dfrac{1}{3}\Big)^{2}\leq \Big(\dfrac{1}{3}\Big)^{x}\leq \Big(\dfrac{1}{3}\Big)^{-2}\ \ ,\ \ \ \dfrac{1}{9}\leq \Big(\dfrac{1}{3}\Big)^{x}\leq 9$