Let f be a function whose Maclaurin series expansion. f(x)=3+12x+24x^2+32x^3+... Explain how you can determine f'(0), f''(0), and f'''(0) simply by an

UkusakazaL

UkusakazaL

Answered question

2021-01-08

Let f be a function whose Maclaurin series expansion.
f(x)=3+12x+24x2+32x3+
Explain how you can determine f'(0), f''(0), and f'''(0) simply by analyzing the oefficients of x, x2, and x3 in the given representation and without directly alculating f'(x), f''(x), and f'''(x) from the representation above.

Answer & Explanation

Nathanael Webber

Nathanael Webber

Skilled2021-01-09Added 117 answers

A Macluarin series is an enlargement of the Taylor series by a function around 0.
f(x)=f(0)+f(0)x+f (0)2!n2+f (0)3!n3+
Given that f(x)=3+12x+24x2+32x3+...
Comparing with the above definition we get f'(0)12,
f (0)26=24f (0)=48
f (0)3!=32f (0)=326=192
f'(0)=coefficient of xf(x)
f''(0)=2! x coefficient of x2f(x)
f'''(0)=3! x coefficient of x3f(x)
 

Jeffrey Jordon

Jeffrey Jordon

Expert2021-11-07Added 2605 answers

Explanation is on photo:

image

 

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