Integral of Exponential function

In summary, the conversation is about finding the closed forms of two integrals and asking for helpful references. The Bob provides two links for potential solutions. The OP expresses gratitude and offers to share the solution if found.
  • #1
macauor
3
0

Homework Statement



1. [tex]\int^{\infty}_{-\infty}e^{-ax^2 - bx^{\frac{5}{2}}}dx[/tex]

2. [tex]\int^{\infty}_{-\infty}x^ne^{-ax^2 - bx^{\frac{5}{2}}}dx[/tex]

(n is integer)

Homework Equations



Does anyone can give me the integral in the closed form or introduce any useful references?

Thank you.
 
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  • #2
Hi macauor, Welcome to PF!

What is putting you off? Can you show us any workings out?

The Bob
 
  • #3
Hello, The Bob
Thank you for your warm welcome!
I want to obtain the closed forms of the integration of the above two integrals.
Do you have any suggestion about that?
 
  • #5
Dear The Bob,

It is really helpful.

Thank you for your kindness.

If I find the solution, I would like to share it on PF

macauor
 

1. What is the formula for the integral of an exponential function?

The formula for the integral of an exponential function is ∫exdx = ex + C, where C is the constant of integration.

2. What is the significance of the integral of an exponential function?

The integral of an exponential function is important in many areas of science and mathematics, as it allows us to calculate the area under the curve of an exponential function. This can be used to solve problems involving growth and decay, such as population growth or radioactive decay.

3. Can the integral of an exponential function be evaluated using the fundamental theorem of calculus?

Yes, the integral of an exponential function can be evaluated using the fundamental theorem of calculus. This theorem states that the derivative and integral are inverse operations, so we can use the formula for the integral of an exponential function to find its derivative.

4. Are there any special cases for the integral of an exponential function?

Yes, there are special cases for the integral of an exponential function. For example, if the exponent is a constant, such as ∫e2xdx, we can use the substitution method to solve it. Additionally, if the base of the exponential function is a negative number, we would need to use complex numbers to evaluate the integral.

5. How is the integral of an exponential function related to the natural logarithm?

The integral of an exponential function is closely related to the natural logarithm. In fact, the natural logarithm function, ln(x), is the inverse of the exponential function, ex. This means that the integral of an exponential function is equal to ln(x) plus a constant.

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