/sci/ - Science & Math

I don't have a clue on how to solve this Anonymous Sat May 19 05:17:39 2018 No.9751974 [DELETED]

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Guys I need help, I guess I should use newton's binomial and Moivres formulas but I don't know how to do it.

"n∈IN*
1) Show that there is a unique polynomial Tn ∈ IR[X] so that for all x Tn(cosx) =cos(nx). Calculate Tn+1 + Tn-1.
2)Show that Tn∈Z[X], precise its degree and his dominant coefficient. Find the roots of Tn, and the extremums of the function x->Tn(x), x∈[-1,1]."

>>	Anonymous Tue Jul 18 13:44:16 2017 No.9046033 [View] File: 7 KB, 205x246, tfwFUCKYOU.png [View same] [iqdb] [saucenao] [google] Why can't you dickheads give me advice? I thought you guys knew math!

>>	Anonymous Tue Jun 13 20:48:32 2017 No.8974295 [View] File: 7 KB, 205x246, index.png [View same] [iqdb] [saucenao] [google] >when you're taking notes and your hand starts to cramp up but you can't stop writing

>>	Anonymous Sat Apr 16 04:41:31 2016 No.8008242 [View] File: 7 KB, 205x246, Unknown.png [View same] [iqdb] [saucenao] [google] I need to get an exact 4.0 GPA next semester or I'll never to transfer to my dream uni. How do I stop being a brainlet bros? Does Ritalin help?

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/sci/ - Science & Math

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