Mathematics
Senior High
y=ax2乗+bx+cの頂点がなぜ-b/2aになるのでしょうか。教えてください。
178 2次関数 yニ2x2十5*填c のグラフについて,
の
頂点の ぇ座標は 5
。電市レ/カがな占の 。底禁(け た
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