FindFit
- To: mathgroup at smc.vnet.net
- Subject: [mg92733] FindFit
- From: Artur <grafix at csl.pl>
- Date: Sat, 11 Oct 2008 06:47:47 -0400 (EDT)
- References: <200810100835.EAA07169@smc.vnet.net>
- Reply-to: grafix at csl.pl
Dear Mathematica Gurus, Who have idea which procedure I can use inspite FindFit in following: In[1]: Table[Simplify[Expand[(1/2) ((1 + Sqrt[13])^(2^n) + (1 - Sqrt[13])^(2^n))]], {n, 1, 6}] Out[1]: {14, 248, 102272, 20489142272, 839425017825619607552, 1409268686920894404615927074915795024740352} In[2]: FindFit[{14, 248, 102272, 20489142272, 839425017825619607552, 1409268686920894404615927074915795024740352}, (1/ 2) ((a + Sqrt[b])^(2^x) + (a - Sqrt[b])^(2^x)), {a, b}, x, WorkingPrecision -> 100] Out[2]:{a -> 2.43785286368448657933626328600, b -> 4.95343824602875750402007143975} Should be: {a -> 1.00000000000000000000, b -> 13.000000000000000000} Who have idea how find (true) a,b when I have sequence Best wishes Artur
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- From: magma <maderri2@gmail.com>
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