Analysis of $e^{ix}$ by Maclaurin Formula

In summary, the Maclaurin Formula for $e^{ix}$ is a simplified form for expressing complex exponential functions, given by $e^{ix} = \sum_{n=0}^\infty \frac{(ix)^n}{n!} = 1 + ix + \frac{(ix)^2}{2!} + \frac{(ix)^3}{3!} + \cdots$. It can be derived from the Taylor Series Expansion of $e^x$ at $x=0$ by replacing $x$ with $ix$. The formula is significant because it allows for easier calculations and problem-solving. The accuracy of the formula depends on the number of terms used, as it is an infinite series.
  • #1
Nea
3
0
Analyze by Maclaurin formula:
$e^{ix}$
 
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  • #2
Do you know the 'formula' for ex? If so, try substituting ix for x.
 
  • #3
You could also do it by looking at the power series of cosx and sinx, and then multiply the sine power series by i and then add the power series of cos on to it, so you get [itex] cosx + isinx [/itex]. Either way will get you the same answer, and the first method would probably be a little quicker.
 

FAQ: Analysis of $e^{ix}$ by Maclaurin Formula

What is the Maclaurin Formula for $e^{ix}$?

The Maclaurin Formula for $e^{ix}$ is given by $e^{ix} = \sum_{n=0}^\infty \frac{(ix)^n}{n!} = 1 + ix + \frac{(ix)^2}{2!} + \frac{(ix)^3}{3!} + \cdots$

How is the Maclaurin Formula for $e^{ix}$ derived?

The Maclaurin Formula for $e^{ix}$ can be derived using the Taylor Series Expansion of $e^x$ at $x=0$, and then replacing $x$ with $ix$ to obtain the complex form.

What is the significance of the Maclaurin Formula for $e^{ix}$?

The Maclaurin Formula for $e^{ix}$ is significant because it allows us to express complex exponential functions in a simplified form, making it easier to perform calculations and solve problems.

How accurate is the Maclaurin Formula for $e^{ix}$?

The Maclaurin Formula for $e^{ix}$ is an infinite series, so the accuracy depends on the number of terms used in the calculation. The more terms used, the more accurate the result will be.

What are some applications of the Maclaurin Formula for $e^{ix}$?

The Maclaurin Formula for $e^{ix}$ is used in various fields of science and engineering, such as signal processing, quantum mechanics, and electrical engineering. It is also used in solving differential equations and in the study of complex analysis.

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