○はじめに左の式を一つクリックし,続けて右の式のうち1つをクリックしたとき,それらが平行な直線になっていたら消えます.間違えば消えません.
○間違ったときは,右側の式を連打するのでなく,左の式を選び直すことから始めてください. ○間違ったときはHELPボタンが表示され,そのボタンをクリックすると解説が出ますが,HELPを読む場合でも読まない場合でも,左の式をどれか(別のものでもよい)選べば問題を再開できます. ![]() |
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