✨ Best Answer ✨
各辺b倍 -b≦bsin(cx+d)≦b
各辺+a a-b≦a+bsin(cx+d)≦a+b
y=a+bsin(cx+d)だから a-b≦y≦a+b
どうして黄色線部分になるのか教えてください🙇
✨ Best Answer ✨
各辺b倍 -b≦bsin(cx+d)≦b
各辺+a a-b≦a+bsin(cx+d)≦a+b
y=a+bsin(cx+d)だから a-b≦y≦a+b
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