Question

o valor máximo da função abaixo e íngual a
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Answer 1

$\Large\boxed{\begin{array}{l}\rm O~valor~m\acute aximo~da~func_{\!\!,}\tilde ao~abaixo\\\rm \acute e~igual~a:\\\rm y=-x^2+x+1\end{array}}$

$\Large\boxed{\begin{array}{l}\tt dados\begin{cases}\sf a=-1\\\sf b=1\\\sf c=1\end{cases}\\\underline{\rm soluc_{\!\!,}\tilde ao\!:}\\\sf\Delta=b^2-4ac\\\sf\Delta=1^2-4\cdot(-1)\cdot1\\\sf\Delta=1+4\\\sf\Delta=5\\\sf y_V=-\dfrac{\Delta}{4a}\\\\\sf y_V=-\dfrac{5}{4\cdot(-1)}\\\\\sf y_V=\dfrac{5}{4}\end{array}}$