证明lim (x趋近于1) x^2-1/x^2-x=2
用定义证明当x趋近于1时lim (3x+2)=5
用ε,δ 来证明 lim(x^2-1)=3 x趋近于-2.
已知lim【(1-x)^(1/2x)】=lim【sinkx/x】(x趋近于0),则k=_
lim(x趋近于0)(e^x-cosx-x)/√(1+x^2) -1
x趋近于无穷时 lim(x+1/2x-1)^x=?
证明lim 1/(x-1)x趋近于2的极限为1
lim(1/(x^2-x)+2/(x^2-x)) x趋近于0
lim (sqrt(x+2)-sqrt(x))/(sqrt(x+1)-sqrt(x)) (X趋近于正无穷)
lim(x趋近于0)(Sinx)^2 =lim(x趋近于0)2x
计算极限 lim(sin3x/sin5x) x趋近于0 lim[2x²/(1-cosx)]x趋近于0
当x趋近于1时 lim[ln(2-x)tan(派/2*x)]
lim(x^2-1/x-1)=?(x趋近于无穷大)