A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
Calculus: Find K
anonymous
 3 years ago
Calculus: Find K

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1353910548451:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0You need to use integration by parts

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Is it:\[\int\limits\limits_{\infty}^{\infty}ke^{\frac{y^2}{2}}dy=1\]?

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1u= y^2/2 find dy =... ?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0but maybe its easier with u=y^2/2

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Its not smart to have that negative there

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1oh, sorry.... yeah, its easier with e^u constants can be rearranged easily...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0I got the wrong answer when evaluating the integral, and I won't do it again now. But this function is a gaussian, and it is expected that the constant k in this case has the value 1/sqrt(2pi)=sqrt(2pi)/2pi. That comes from the statistic theory.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Yes the answer is 1/ sqrt(2*pi) I just so dont follow how they got that answer.

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1did u try that substitution and then integration by parts ?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0I was getting weird answers. I have not really touched calculus for over a yr so i cld be messing up

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1\(\huge\int \frac{e^{u}u^{1/2}}{\sqrt2}du\) when 2u=y^2 yes, its messy...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0How would you continue from here?

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1u need to know gamma function to solve that ... i am so sorry, my internet are giving me connection problems....

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0hmmm I know the gamma distribution function

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0ohhhh I see it now lol

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1\( \Gamma(z) = \int_0^\infty e^{t} t^{z1} dt \)

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1now , you'll get it easily.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Thanks let me try to work it out then. Thanks :)))))

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.1\(\Gamma{1/2} = \sqrt{\pi}\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0ohhh coool never knew that

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0I feel like i am missing the basics in math :(
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.