2n-(4n^2-kn+3)^0.5的極限是1,則k的值等於?

2n-(4n^2-kn+3)^0.5的極限是1,則k的值等於?

2n-根號(4n^2-kn+3)=根號(4n^2)-根號(4n^2-kn+3)=4n^2-(4n^2-kn+3)--------------------------------=(上下同時乘以根號(4n^2)+根號(4n^2+kn+3))根號(4n^2)+根號(4n^2-kn+3)kn-3--------------------------------…