求极限lim 2X^2-5X+2/X^2-X-2 X=2
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求极限lim2X^2-5X+2/X^2-X-2X=2求极限lim2X^2-5X+2/X^2-X-2X=2求极限lim2X^2-5X+2/X^2-X-2X=2lim[2x²-5x+2]/[x&
求极限lim 2X^2-5X+2/X^2-X-2 X=2
求极限lim 2X^2-5X+2/X^2-X-2 X=2
求极限lim 2X^2-5X+2/X^2-X-2 X=2
lim [2x²-5x+2]/[x²-x-2]
x→2
=lim (x-2)(2x-1)/(x-2)(x+1]
x→2
=lim (2x-1)/(x+1)
x→2
=(4-1)/(2+1)
=1
糟糕,这种题也不会,玩得太多了吧,化简啊!
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