若 lim 2n—根号(4n^2-kn+3) =1,则k=?

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若lim2n—根号(4n^2-kn+3)=1,则k=?若lim2n—根号(4n^2-kn+3)=1,则k=?若lim2n—根号(4n^2-kn+3)=1,则k=?2n—根号(4n^2-kn+3)=(k

若 lim 2n—根号(4n^2-kn+3) =1,则k=?
若 lim 2n—根号(4n^2-kn+3) =1,则k=?

若 lim 2n—根号(4n^2-kn+3) =1,则k=?
2n—根号(4n^2-kn+3)=(kn-3)/(2n+根号(4n^2-kn+3))
lim 2n—根号(4n^2-kn+3)
=lim(kn-3)/(2n+根号(4n^2-kn+3))
=lim(k-3/n)/(2+根号(4-k/n+3/n^2))
=(k-0)/(2+根号(4-0+0))
=k/4
=1
k=4

都没说n趋向于多少怎么做?