Respostas AVA

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

$\displaystyle{D}={\left\lbrace{x}\in\mathbb{R};{x}\ne\frac{\pi}{{3}}+{k}\pi,{c}{o}{m}{k}\in\mathbb{Z}\right\rbrace}$ e $\displaystyle{I}{m}={\]}-{1},{1}{[}$
$\displaystyle{D}={\left\lbrace{x}\in\mathbb{R};{x}\ne{k}\pi,{c}{o}{m}{k}\in\mathbb{Z}\right\rbrace}$ e $\displaystyle{I}{m}={\]}-\infty,-{1}{\]}\cup{\left[{1},+\infty{[}\right.}$
$\displaystyle{D}={\left\lbrace{x}\in\mathbb{R};{x}={2}\pi\right\rbrace}$ e $\displaystyle{I}{m}={\left[-{1},+\infty{[}\right.}$
$\displaystyle{D}=\mathbb{R}$ e $\displaystyle{I}{m}=\mathbb{R}$
$\displaystyle{D}={\left\lbrace{x}=\frac{\pi}{{2}}+{k}\pi,{c}{o}{m}{k}\in\mathbb{Z}\right\rbrace}$ e $\displaystyle{I}{m}={\]}-\infty,-{1}{\]}\cup{\left[{1},+\infty{[}\right.}$

MATEMÁTICA III

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