nex_math/data/question_images/generated_db4dd20088e3439990aa82cd37706802.svg

<svg xmlns='http://www.w3.org/2000/svg' width='320' height='240' viewBox='0 0 320 240'><rect width='320' height='240' fill='white'/><line x1='20' y1='160' x2='300' y2='160' stroke='black'/><line x1='40' y1='20' x2='40' y2='220' stroke='black'/><path d='M40,40 Q160,360 280,40' fill='none' stroke='blue' stroke-width='2'/><line x1='160' y1='160' x2='160' y2='200' stroke='gray' stroke-dasharray='4 3'/><line x1='40' y1='200' x2='160' y2='200' stroke='gray' stroke-dasharray='4 3'/><circle cx='160' cy='200' r='3' fill='red'/><text x='170' y='215' font-size='12' fill='red'>(2,-1)</text><text x='165' y='155' font-size='12'>x=2</text><text x='10' y='15' font-size='12'>f(x)=x²-4x+3</text><text x='290' y='175' font-size='12'>x</text><text x='45' y='25' font-size='12'>y</text><text x='150' y='232' font-size='12' fill='red'>最小值 -1</text></svg>