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Home / Numerical Techniques C++ / Maclaurin Series formula | how to find the Maclaurin Series Formula

Maclaurin Series formula | how to find the Maclaurin Series Formula

ByLonz Updated onJuly 20, 2021
Numerical Techniques C++
What is Maclaurin Series formula.
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Table of contents
  1. What is Maclaurin Series
  2. Maclaurin series formula
    1. ex =1 + x + x2/2! + x3/3! + ……
  3. How to find Maclaurin Series Formula
    1. We can find or Derive the Maclaurin series from Taylor series.

What is Maclaurin Series

The Maclaurin series formula is a special case of the Taylor series formula. Or in other words, we can derive the Maclaurin formula from the Taylor series very easily.

Maclaurin series formula helps in writing a function as a series (or sum) of terms involving the derivatives of the function. This formula helps in finding the approximate value of the function.

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Maclaurin series formula

ex =1 + x + x2/2! + x3/3! + ……

What is Maclaurin Series formula.
Maclaurin Series formula

How to find Maclaurin Series Formula

We can find or Derive the Maclaurin series from Taylor series.

Sol. As we Know Taylor series is:

taylor series formula

Let f(x) = ex and f(0)=1 (because we only know value of f at x0=1).

Also f(0) = 1, f’(0) = 1, f’’(0) = 1

Since  (d/dx)ex = ex

Therefore, f’(x) = ex

F’’(x) = ex

F’’’(x) = ex

:

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:

Now, f(0+h) = f(0) + f’(0)h + f’’(0)h2/2! + f’’’(0)h3/3!

F(h) = 1 + h + h2/2 + h3/6 + h4/24 + …

x+h = 0 +h, ( or replace h by x).

f(x) = 1 + x + x2/2 + x3/6 + x4/24 + ….

Or,  This can be simplified as maclaurin series.

ex =1 + x + x2/2! + x3/3! + ……

Suggested:

  • Linear regression

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