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二次函數的標準式是:y=ax²;+bx+c,a≠0. 二次函數的配方法是:y=a(x-h)²;+k,a≠0.這樣的格式就能知道函數的對稱軸是x=h,最值k. 願意解疑答惑.如果明白,並且解决了你的問題,請及時採納為滿意答案!請諒解,
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