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Incredible (Wolfram alpha)
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GL
Feb 8, 2012, 2:06:00 PM2/8/12
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Hello,
I suggest you to have a look at
http://www.wolframalpha.com/
(Wolfram computational engine on line)
Example :
"solve y'(t) = h(t) y(t)^2 y(t)"
=> y(t) = -1/(sqrt(2) sqrt(-c_1- integral_1^t h(xi) dxi))
http://www.wolframalpha.com/input/?i=solve+y%27%28t%29+%3D+h%28t%29+y%28t%29%5E2+y%28t%29
Each step of the calculus can be given by the engine.
Very useful for integration etc. ;-)
Ciao !
I suggest you to have a look at
http://www.wolframalpha.com/
(Wolfram computational engine on line)
Example :
"solve y'(t) = h(t) y(t)^2 y(t)"
=> y(t) = -1/(sqrt(2) sqrt(-c_1- integral_1^t h(xi) dxi))
http://www.wolframalpha.com/input/?i=solve+y%27%28t%29+%3D+h%28t%29+y%28t%29%5E2+y%28t%29
Each step of the calculus can be given by the engine.
Very useful for integration etc. ;-)
Ciao !
b.kleine
Feb 8, 2012, 3:39:37 PM2/8/12
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solve 0= cos(x)-sqr(sin^2(x))+log(x)
Greetings!
Joris Pinkse
Feb 10, 2012, 4:06:47 PM2/10/12
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try a certain four letter word starting with an f and it shows you the
word frequency over the centuries.... we're pretty polite these days!
word frequency over the centuries.... we're pretty polite these days!
Athel Cornish-Bowden
Feb 11, 2012, 9:17:53 AM2/11/12
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On 2012-02-10 21:06:47 +0000, Joris Pinkse said:
> try a certain four letter word starting with an f and it shows you the
> word frequency over the centuries.... we're pretty polite these days!
I think you'll find that the decline in frequency correlates very
> try a certain four letter word starting with an f and it shows you the
> word frequency over the centuries.... we're pretty polite these days!
closely with the decline in printing the long s (in English -- I
realize it survived much longer in German).
--
athel
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