Respostas AVA

O domínio e imagem da função y = f(x) = sec(x) são respectivamente:

$\displaystyle{D}={\left\lbrace{x}\in\mathbb{R};{x}=\frac{\pi}{{2}}+{2}{k}\pi,{c}{o}{m}{k}\in\mathbb{Z}\right\rbrace}$ e    $\displaystyle{I}{m}={\]}-\infty,{1}{\]}\cup{\left[{1},+\infty{[}\right.}$
$\displaystyle{D}={\left\lbrace{x}\ne{k}\pi,{c}{o}{m}{k}\in\mathbb{Z}\right\rbrace}$ e    $\displaystyle{I}{m}={\]}-\infty,-{1}{\left[\cup\right]}{1},+\infty{\]}$
$\displaystyle{D}={\left\lbrace{x}\in\mathbb{R};{x}\ne\frac{\pi}{{2}}+{k}\pi,{c}{o}{m}{k}\in\mathbb{Z}\right\rbrace}$ e    $\displaystyle{I}{m}={\]}-\infty,-{1}{\]}\cup{\left[{1},+\infty{[}\right.}$
$\displaystyle{D}=\mathbb{R}$ e $\displaystyle{I}{m}=\mathbb{R}$
$\displaystyle{D}={\left\lbrace{x}\in\mathbb{R};{x}\ne\frac{\pi}{{2}}+{k}\pi,{c}{o}{m}{k}\in\mathbb{Z}\right\rbrace}$ e    $\displaystyle{I}{m}={\left[-{1},{1}\right]}$

MATEMÁTICA III

O domínio e imagem da função y = f(x) = sec(x) são respectivamente: