求lim[x^2/(1+2x)-x^3/(2x^2+1)],x趋向∞
求极限 (1) x趋向x/6 lim ln(2cos2x) (2) x趋向0 lim(e^x-1)/x (3) x趋向0
求lim(x趋向1)(x^2-3x+2)/(1-x^2)的极限
求极限!lim(x趋向于1)x的平方+2x+3/x+2
lim(x/(1+x^2)),x趋向无穷大
求下列极限 lim(x趋向2)x-2/根号3x-2.和lim(x趋向0)根号1+x^2-1/x
求下列式子的值(1)lim(x趋向无穷) (2x+7)/[(x-1)(x+2)]=?(2)lim(x趋向无穷) (3x^
Lim (1+x)(1+2x)(1+3x)-1除以x (x趋向0)
求lim(x趋向于0)[(1+X)^3-(1+3X)]/(X^2+X^3)极限
当x趋向于正无穷,求lim{{(x+1)^2*(3x-1)^3}/x^4*(x+4)}
lim(x趋向无穷)[1-(2/x)]^3x
lim[ln(2^x+3^x)^(1/x)](x趋向于无穷) 结果是什么
lim(x趋向于0)(1-cosx)/x^2