Understanding Maclaurin Polynomials: Exploring Substitution Techniques

estro
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I'm trying to understand the reminder of Maclaurin polynomials

[PLAIN]http://estro.uuuq.com/0.png
[PLAIN]http://estro.uuuq.com/1.png
[PLAIN]http://estro.uuuq.com/2.png
[PLAIN]http://estro.uuuq.com/3.png
[PLAIN]http://estro.uuuq.com/4.png
Here I show few attempts to use substitution on known polynomials.

Where I'm wrong?
 
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The only thing you are doing wrong is that you have "R_2(x)" and "R_4(x)". What you should have is R_2(x+2) and R_2(x^2+ 2)[/quote] as you do on the right.
 
Thank you for your response,
So this is mistake in my book?: [PLAIN]http://estro.uuuq.com/book_wrong.png

So the right way is: [PLAIN]http://estro.uuuq.com/right.png
 
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There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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