Mathematics
Senior High
(3)なんですけど、放物線y＞=x^2-1の頂点の出し方を忘れたので教えてください🙇♀️
基本 例題 104 連立不等式の表す領域
次の連立不等式の表す領域を図示せよ。
[x-3y-9<0
[x2+y2≦9
(1)
(2)
2x+3y-6>0
lx-y<3
(3){ysx+1
\ y ≥ x²-1
C
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