lim(x->2) (x-2)·sin(1/2-x)为什么等于0?
lim x趋近于0 x^2sin(1/x) 等于多少?lim x趋近于0 sin(1/x)又等于多少?
lim(x趋向0)ln(1+sin x)/x^2
求极限lim(x-->0)x^2 sin(1/x),
求极限 lim sin(x^2 * sin (1/x))/x x->0
求极限 ((sin(x^3+x^2-x)+sin x) /x x→0 已知lim sinx/x=1
lim x->0(sqrt(sin(1/x^2)) 求极限
lim tan x - sin x / x³ lim eˆ2x - 1 / x
lim(x→0)ln(x^2+1)等于
lim(sin(x^2*cos(1/x)))/x怎么做?
证明lim(x→0)[(x^2)sin(1/x)]=0
为什么为什么lim(Δx→0)cos(x+Δx/2)*lim(Δx→0)[sin(Δx/2)/(Δx/2)] = cos
lim(tan^3(3x)/(X^2sin(2x))(x趋近于0)