已知x,y为实数,且y=√2x-1/3-4x+√2x-1/4x-3+1/2,求5x-3y的值

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已知x,y为实数,且y=√2x-1/3-4x+√2x-1/4x-3+1/2,求5x-3y的值已知x,y为实数,且y=√2x-1/3-4x+√2x-1/4x-3+1/2,求5x-3y的值已知x,y为实数

已知x,y为实数,且y=√2x-1/3-4x+√2x-1/4x-3+1/2,求5x-3y的值
已知x,y为实数,且y=√2x-1/3-4x+√2x-1/4x-3+1/2,求5x-3y的值

已知x,y为实数,且y=√2x-1/3-4x+√2x-1/4x-3+1/2,求5x-3y的值
因为(2x-1)/(3-4x)=-[(2x-1)/(3-4x)]大于等于0,
故必须有(2x-1)/(3-4x)=-[(2x-1)/(3-4x)]=0
得x=1/2,y=0+0+1/2=1/2
5x-3y=5/2-3/2=1

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