...3x^2 -2)/(x^4 +x^2 -1) 2.lim(x→∞) (4x^4 -2x^2 -x)/(x^3...
发布网友
发布时间:2024-10-07 21:31
我来回答
共1个回答
热心网友
时间:2024-11-21 04:21
1.lim(x→∞) (3x^2 -2)/(x^4 +x^2 -1)
=lim(x→∞) (3/x^2 -2/x^4)/(1+1/x^2 -1/x^4)
=(0 -0)/(1+0 -0)
=0
2.lim(x→∞) (4x^4 -2x^2 -x)/(x^3 -x^2 +1)
=lim(x→∞) (4x -2/x -1/x^2)/(1 -1/x +1/x^3)
=(∞ -0 -0)/(1 -0 +0)
=∞