Calculating Taylor Series for e^(x^2) around x=0

In summary, the conversation is about finding the Taylor series of e^(x^2) about x=0. The formula for a Taylor series is mentioned and there is confusion about the second term, but it is clarified that the second term is x^2. The conversation ends with a thank you and an additional suggestion.
  • #1
dantheman57
4
0

Homework Statement


Find the Taylor series of e^(x^2) about x=0


Homework Equations



Taylor Series = f(a) +f'(a)(x-a) + (f''(a)(x-a)^2)/2 ...

The Attempt at a Solution



So, the first term is pretty obvious. It's e^0^2, which is zero.

The second term is what got me. (e^x^2)'=2x*(e^x^2), so at zero that is zero. Multiply by x, still zero. But the answer key says the second term is x^2. I really cannot understand this.

Thanks!
 
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  • #2
dantheman57 said:
[

So, the first term is pretty obvious. It's e^0^2, which is zero.

My bad. e^0^2 is one. Typo.
 
  • #3
Keep going. It's the f'' term that is the second term.
 
  • #4
Thank you so much!
 
  • #5
You can also take the Taylor series of ex and then just fill in x2.
 

1. What is the Taylor series for E^(x^2)?

The Taylor series for E^(x^2) is given by ∑(n=0 to ∞) (x^(2n))/(n!), where n! represents the factorial of n.

2. How can the Taylor series for E^(x^2) be used to approximate values?

The Taylor series can be used to approximate values of E^(x^2) by plugging in a specific value for x and adding up a finite number of terms. The more terms that are included, the more accurate the approximation will be.

3. What is the significance of the Taylor series for E^(x^2)?

The Taylor series for E^(x^2) is significant because it allows us to represent the function as an infinite sum of polynomials, which can be easier to work with and manipulate in some cases.

4. How does the Taylor series for E^(x^2) relate to the Maclaurin series?

The Maclaurin series is a special case of the Taylor series, where the center point is located at x=0. Therefore, the Maclaurin series for E^(x^2) is simply ∑(n=0 to ∞) (x^(2n))/(n!).

5. Are there any applications of the Taylor series for E^(x^2) in real life?

Yes, the Taylor series for E^(x^2) has various applications in fields such as physics, engineering, and economics. It can be used to approximate values of functions in various mathematical models and can also aid in solving differential equations.

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