Question 916301
{{{y=x^2-2x-3}}}
{{{dy/dx=2x-2}}}
At the turning point, {{{dy/dx=0}}}
{{{2x-2=0}}}
{{{2x=2}}}
{{{x=1}}}
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,
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{{{graph(300,300,-5,5,-5,5,x^2-2x-3)}}}