- #1
beaf123
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Homework Statement
Last exam in my school this exircise was given:
From norweagen:
" Decide the Taylor polynomial of second degree of x=0 of the function:
f(x) = 3x^3 + 2x^2 + x + 1
I found the Taylor polynomial of second degree to be: 2X^2+X+1, which is correct.
If I get an exircise like this on the exam I thought maybe it would give me some bonus points if I could show it a the graph. what exactly does the Taylor polynomial tell me?
How f(x) behave near x=0?
And found out that the polynomial of third degree or (infinity) gives me back the original function. So what's the point in doing this on a function like this? To get an easier functiopn to work with?
And for a function like f(x) = e^x, which has infinitly many derivatives. The sum of all derivivatives estimate the function compleatly?
And what is that good for?