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Apr
10
revised How to calculate time period?
added 1 character in body
Apr
10
revised How to calculate time period?
added 34 characters in body
Apr
10
revised How to calculate time period?
added 187 characters in body
Apr
10
comment Replace a number in a string
try ToString .
Apr
9
comment How to calculate time period?
do you need to be accurate if there is a daylight savings offset in the range?
Apr
9
answered How to calculate time period?
Apr
9
comment How to calculate time period?
your example results are not correct (?) else I don't understand the question, i get more like 500h.
Apr
9
comment Solving differential equation
Basically the same, use NDSolve and you need to specify lambda and provide initial/boundary conditions.
Apr
9
comment It is possible to calculate a two vector integral
You can break that into nested 2d integrals and it converges without errors/warnings. ( Essentially the same result 8.70659*10^7 )
Apr
9
comment Solving differential equation
I suspect you need to do this numerically. Do you have some reason to expect an analytic solution?
Apr
9
reviewed Approve Solving differential equation
Apr
9
comment It is possible to calculate a two vector integral
take a stab at writing some mathematica code. I can't tell where you are stuck, and the problem isn't clearly posed.
Apr
8
revised How do I apply a conditional append rule to plot randomly chosen points?
added 588 characters in body
Apr
8
answered How do I apply a conditional append rule to plot randomly chosen points?
Apr
8
answered Import and export without changing number format
Apr
8
comment Import and export without changing number format
One you have "1 2 3" use StringSplit to get {"1","2","3"}. Your import might look something like this: StringSplit /@ StringSplit[ Import[file, "Text"] , "\n"]
Apr
8
comment random discrete data 3D plot
I pasted in a Graphic3D figure just so folks can see what the data looks like...
Apr
8
revised random discrete data 3D plot
added 109 characters in body
Apr
8
comment Import and export without changing number format
you can always Import[file,"Text"] , then do what you want with string operations.
Mar
22
awarded  Custodian