用无穷小替换 lim x趋向无穷 (2x^2 - 1)/(X^3+x-1)的整体乘(arctanx+cosx+1)
用无穷小替换 lim x趋向无穷 (2x^2 - 1)/(X^3+x-1)的整体乘(arctanx+cosx+1)
当x趋向于0,lim In(1+x)/x^2不能用等价无穷小替换等于正无穷,而是用罗丽大公式,等于lim 1/(2x(1
用无穷小量的性质求下列极限,1,x趋向于0,limx^2cos(1/x) 2,x趋向于无穷大,lim(arctanx/x
lim(x趋向无穷)[1-(2/x)]^3x
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^
求lim x趋向于0(arctanx)/(x^2+1)
【求极限】(x趋向正无穷)lim((x^2)/arctanx).
微积分求极限lim(x趋向无穷)(x2+(cosx)2-1)/(x+sinx)2=
lim((4x^2+x-1)^1/2+x+1)/(x^2+arctanx)^1/2(x趋向于负无穷)
lim(x趋向于0)(1-cosx)/x^2
lim[ln(2^x+3^x)^(1/x)](x趋向于无穷) 结果是什么
求lim x趋向于负无穷 (x/x+1)arctanx