Question

09- (M110480I7) considere a função trigonométrica f: [0,2π] → IR dada por f(x) = cos(3x). o gráfico dessa função f está representado emq​

Answer 1

$\Large\boxed{\begin{array}{l}\boxed{\begin{array}{c|c|c|c|}\sf x&\sf3x&\sf f(x)=cos(3x)\\\sf0&\sf0&\sf1\\\\\sf\dfrac{\pi}{6}&\sf\dfrac{\pi}{2}&\sf0\\\\\sf\dfrac{\pi}{3}&\sf\pi&\sf-1\\\\\sf\dfrac{\pi}{2}&\sf\dfrac{3\pi}{2}&\sf0\\\\\sf\dfrac{2\pi}{3}&\sf2\pi&\sf1\end{array}}\\\\\underline{\boldsymbol{o~gr\acute afico~est\acute a~anexo.}}\end{array}}$