Question

construa um plano cartesiano Y=1+2cosX

Answer 1

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$\tt vamos\,admitir\,que\,x\,esteja\,em\,radianos.$

$\boxed{\begin{array}{c|l}\sf{x}&\sf{f(x)}\\\sf{0}&\sf{3}\\\sf{\dfrac{\pi}{2}}&\sf{1}\\\sf{\pi}&\sf{-1}\\\sf{\dfrac{3\pi}{2}}&\sf{1}\\\sf{2\pi}&\sf{3}\end{array}}$

$\tt o~gr\acute{a}fico~est\acute{a}~anexo$