無理関数のグラフで驚いたんですけどなんでルートの中身マイナスがありなんですか？？ 例 y=√-x
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![[4]でのf(2)と[5]でのf(2)はなぜ違うのですか？
[5]の値をどう求めているかも... - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1751346/thumb_l_webp_6304FAE3-9D87-492F-9BB1-DA17DB994B4D.webp?Expires=1747730904&Signature=aoxQI1Y2W9jEn4U5qYPp3LSVvlc4e38xeok~C3ovTnvo0YdAajPWWiqJ05lU0nuFRRPJUTSOMNVt4T6LWe9PMFNItQsq8aBCGEcAAbS-puAosO1J-DAj6LMTY1UX1iqFYV20PBcgRsWZjRkjftTDC2xRvt~0MR4w7zKpsMyMvhG46zLMBJSEdN1ovSFBPXGdH3rbUdgd~VFz0u9ThuWO-Ox1YGvUsT97czfjcWK2Qc87vLUNPZtTDdAYZWhCQUNzKTPs7vc2tRxEgRLNUPjM0AE08BruOwWxVWV9dkkNkqrF0wpjjDuaS6pFRygdYAEFJ545GzMUROW4QojiZLTYBw__&Key-Pair-Id=K2W722D70GJS8W&Expires=1747730904&Signature=PC2TgNmFpmxDfBx5JXf~QppoAB0ySonqLd0Gf61CYkWLKwIDtVJQMR6Xtlf5mouJ4UwGJ4utxpcicJlQoAIMGBPuPF-NTtHhZ-9edyd4uGC9a~~M8J~7R5tg2MJgi9XYtKfMpFs8gjwa~lIZLkH2E6OZ~rCaxPXViYw5wdq9e8BddLgSv1Vg4pZvqbHV-BNA10pKuJ~HLHDkyBYsWaPiW3yc2ZP3-zJzjSgNsl3UPN8ZAgBgvz4QoqvQTZARYvNFExbYRDuwujkOldP1QSaoReLNJhQRwX6aMGQTpOZIW2ZslMuOE~n1JWsvHHITg5dfsYBAM4x~aLVLOqnuRkP6lA__&Key-Pair-Id=K2W722D70GJS8W)
![[4]でのf(2)と[5]でのf(2)はなぜ違うのですか？
[5]の値をどう求めているかも... - 2](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1751347/thumb_l_webp_D2B33AD1-FC41-4282-BF82-2334F363472C.webp?Expires=1747730904&Signature=NTyjKDrvWmccL7Ks6OwagrcD4akkmjrX7ZoBvh7bwhaNQBzHkgtCH7~VgBeBZ84cy19mX0eaV6yGNpaAiKZiRg9MRN1saxEdHLfuADoDEpFjZJ59Fk0cUhp5ygwbLX762uGWWpEEr0HISMJ-nG1k6S2Z0-pjbARik9WSvFkyIFGFarTvV7o0N5SHhJMNFZbtB6GByTt59bUvZPywzUBDYYNg1T0Ak3g2dzlushO2EIoMvGS~sgOvocJFtqGmdoahKDFrvwpGR4YpE04SZoQKnqBdXgVOpJtLPArvBbRPf4unLvWpW0HG08kk-XGp-rhtcgJlP~d1AlW4pKGY9RFOgQ__&Key-Pair-Id=K2W722D70GJS8W&Expires=1747730904&Signature=rvDuRsKl5by1r29IeeaOoIvNywZn2LBh0X~yEE9E2MF0k4aOEc4Iv80CEx1S1lvggf6iRjXHFrHuRfe6jCH-pFgJUFpSL1PgGm-jVjj4Jw~Q9yfMP55n3ENYA-PSTSFSFArIvIZn1Oj-56-WSZo591GkqruycU8XEQUGLL~LSUuEzqQ4hYIBaDKDtr3Lv13enAyD2OfASG6v5AHDz7igJkuYSOrlnACUYjR4UZXiSRj~gI9SLnZr972sAAPiuxyf3~4aQkHvNJG1rbAxgXK1y6ncf5RUkHNA2ctH0LmKSX1MaCmUd3hRNRrPzmD6L6qIOwGAmy~peYefyucU~8USCw__&Key-Pair-Id=K2W722D70GJS8W)
