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Nov
26
comment Expressing Sets as Regular Expressions
I missed your edit. I think wil match all required string, but I will heck this. But the three other patterns are wrong. If the regular expression is correct, it is unclrear what means "more accurate". You must define some measure for accuracy. One possibility is to count the number of characters in a pattern string and say a pattern is more accurate ithan another pattern if it needs less characters. (10∪0)*(λ∪1)00 has length 14, my pattern (10∪0)(10∪0)*0 hs length 14, too so both have the same accuracy if we use this accuracy metric
Nov
26
comment Expressing Sets as Regular Expressions
I don't know what means 'more' accurate: Either it is accurate or it is not. My regular expressions match exactly that what is required. Your regexp in 1. don't match 100
Nov
26
comment Expressing Sets as Regular Expressions
But maybe this is not availible in your syntax.
Nov
26
comment Expressing Sets as Regular Expressions
Why do you need this? I means 1 can appear at this position. he usual regular epression syntax is 1? for this.
Nov
26
comment Expressing Sets as Regular Expressions
Can you explain what is λ?
Nov
26
comment Expressing Sets as Regular Expressions
I think 1. does not match 100.
Nov
25
comment What is the probability that he counts head more that tails when tosses a coin 6 times
@guest11: you can accept only one answer but I think you can unaccept an answer an accept another one. But you can upvote as many answers as you like.
Nov
25
comment What is the probability that he counts head more that tails when tosses a coin 6 times
+1 simple , short and can be used for arbitrary number of tosses without increasing the number of calculations
Nov
24
comment Show that the derivative of a function is not continuous
The special thing is that g' is not continous at 0. Otherwise lim g'(x_n)=g'(0). The word continous appears in the title. there is no reason to repeat it in the body of the message.
Nov
24
comment Show that the derivative of a function is not continuous
@zhw why do you think your title is more descriptive?
Nov
23
comment Simple fraction calculation
-1, for the error Daiel mentioned
Nov
22
comment Tigers and lions attack if they are hungry or threatened.
@barak manos: 1)Yes, the downvote is from me. 2) It is up to me to decide if a reason is good enough for a downvote and not to you to decide this. 3) It is not my "personal biological opinion" but it follows from wikis definition of hybrid speciation that these are new species. 4) $\land$ is the intersection of two classes and using these hybrid species makes this less clear and so I do not like it
Nov
22
comment Tigers and lions attack if they are hungry or threatened.
I think 1. is funny but is wrong. A tigon is neither a tiger nor a lion (that is why it is called tigon). the same is true for ligers. So sentence 1. means: "if something is a tiger and a lion (which is not possible), then ..."
Nov
22
comment Prove that $\pi>3$ using geometry
How do you want to show something about pi if you have not definition of it?
Nov
22
comment Prove that $\pi>3$ using geometry
How is pi defined?
Nov
20
comment Standard terminology for the “quotient of a quotient”
so $q_k =n \mod m^{k+1}$
Nov
20
comment Show that the derivative of a function is not continuous
you get $g'(x_n)= \frac{4}{\frac{\pi}{3}+ 2n\pi}\sin (\frac{\pi}{3}+ 2n\pi)$. This converges to $0$
Nov
20
comment Show that the derivative of a function is not continuous
the title of our post is strange.
Nov
20
comment Show that the derivative of a function is not continuous
Yes, I think you are right
Nov
20
comment Show that the derivative of a function is not continuous
And what is $g'$ if $x \ne 0$? Did you already calculate it?