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
求极限lim 2X^2-5X+2/X^2-X-2 X=2
2个回答
相关问题
-
求极限lim（x→2）（3x^2+5x
-
求极限：lim x→2 sin(x-2)/(2+x-x²)
-
lim(x->∞)x2+x+2/2x3-x 求极限
-
一道数学极限设lim(x→2）[(f(x)-5]/(x-2)=3,求lim(x→2)f(x).
-
求极限lim(x趋于无穷)((x3+2x2-1)/(5x2+x))
-
求极限lim x->无限 2x^2-1/x^2+2x
-
lim(x^2-1)/(x^2-5x+4) x趋向于2 求极限
-
求极限lim(x→∞)√（4+x^2)/2x
-
lim x →2 （2/2x-x^2 +1/x^2-3x+2）求极限
-
求(x→2) lim (x+1)/(x^2-x-2)的极限.