Questions asked by Alex F.
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Why is the vertical asymptote for #f(x)=sqrt((x-3)/x)# x=0 when the domain is (-infinity,0)#uu#(3,+infintiy)?
Why does #|x|=-x# as #x -> -oo#?
How do I solve this limit? #lim_(x->0)((1-cos^3(3x))/(xsin6x))#