[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4 可以化得 x2[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4可以化得x2^2=16-x1^2 spart是根号
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![[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4 可以化得 x2[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4可以化得x2^2=16-x1^2 spart是根号](/uploads/image/z/5197183-7-3.jpg?t=%5Bsqrt%284-x1%5E2%2F4%29%2Asqrt%284-x2%5E2%2F4%29%5D%2Fx1x2%3D-1%2F4+%E5%8F%AF%E4%BB%A5%E5%8C%96%E5%BE%97+x2%5Bsqrt%284-x1%5E2%2F4%29%2Asqrt%284-x2%5E2%2F4%29%5D%2Fx1x2%3D-1%2F4%E5%8F%AF%E4%BB%A5%E5%8C%96%E5%BE%97x2%5E2%3D16-x1%5E2+spart%E6%98%AF%E6%A0%B9%E5%8F%B7)
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[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4 可以化得 x2[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4可以化得x2^2=16-x1^2 spart是根号
[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4 可以化得 x2
[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4
可以化得
x2^2=16-x1^2 spart是根号
[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4 可以化得 x2[sqrt(4-x1^2/4)*sqrt(4-x2^2/4)]/x1x2=-1/4可以化得x2^2=16-x1^2 spart是根号