Question 219495
f(x)=-(x-1)^2+4.
f(x)=-(x^2-2x+1)+4
f(x)=-x^2+2x-1+4
f(x)=-x^2+2x+3
{{{ graph( 300, 200, -6, 5, -10, 10, -x^2 +2x +3) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -x^2 +2x +3).