已知实数a b c满足条件|a—3b|+√2b+c=0且b≠0,求a—2c/2a+c的值
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已知实数abc满足条件|a—3b|+√2b+c=0且b≠0,求a—2c/2a+c的值已知实数abc满足条件|a—3b|+√2b+c=0且b≠0,求a—2c/2a+c的值已知实数abc满足条件|a—3b
已知实数a b c满足条件|a—3b|+√2b+c=0且b≠0,求a—2c/2a+c的值
已知实数a b c满足条件|a—3b|+√2b+c=0且b≠0,求a—2c/2a+c的值
已知实数a b c满足条件|a—3b|+√2b+c=0且b≠0,求a—2c/2a+c的值
|a—3b|+√(2b+c)=0
∴a-3b=0
2b+c=0
解得a=3b c=-2b
(a—2c)/(2a+c)
=(3b+4b)/(6b-2b)
=7/4
∵|a-2b|+√(2b+c)=0
由∵|a-2b|>=0,
√(2b+c)>=0
∴a-2b=0,
2b+c=0
∴ a=2b,2b=-c
∴ a=-c
∴(a-2c)/(2a+c)
=(-c-2c)/(-2c+c)
=(-3c)/(-c)
=3
|a—3b|+√2b+c=0且b≠0,易知:
a-3b=0,2b+c=0,则
2a=6b=-3c≠0,,故
a-2c/2a+c=7/4