Mathematics
Junior High
Resolved
a1x1+a2x2+a3x3=0 b1x1+b2x2+b3x3=0
の連立方程式の解(x1=a2b3-a3b2 x2=a3b1-a1b3 x3=a1b2-a2b1)の導き方を教えて下さい。
やり方だけでも良いので宜しくお願いします。
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