Taylor Series Function


Posted on 16th Feb 2014 07:03 pm by admin

So I am working a a project for my intro C++ class, and I am having some trouble with a function for approximating exp(x) using a taylor series. The taylor series approximations for exp(x) is: 1+x+((x^2)/2!)+((x^3)/3!+...., and I am supposed to approximate to "n" number of terms.

Thus far, my function is this:

Did you know?Explore Trending and Topic pages for more stories like this.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
double fact(int c) { int factorial=1; for ( int i = 1; i <= c; i++ ) { factorial *=i; } return factorial; } double taylor(double x, int n) { double approx; double sum; double value; for (int i=1; i<=n; i++) { int factorial=1; factorial*=i; sum=((pow(x,i))/fact(i)); value+=sum; } approx = 1+value; return approx;

Now this does work if I just run it by itself, i.e. just do something like "cout << taylor(x,n)". But whenever I call this function within another function, it does not work! It is kinda hard to explain, but anyone have any ideas?

Thanks
No comments posted yet

Your Answer:

Login to answer
197 Like 49 Dislike
Previous forums Next forums
Other forums

Problem with umlauts and UTF-8
Hello every1,

I'm creating my own little CMS at the moment and got some problems with the cha

Menu restriction
How can I restrict the individual menu that would appear when a user logs in so that all users are c

Send inserts to mysql thru port 80
Hi!

I have an application that must do some inserts in a mysql db. This db is behind a firewa

first few characters only
hi, does anyone know how to use PHP to take the first few words of a text and limit them? i have see

admin with my register system?
Hey i wana make it so i can make a admin level on my register system , I'm kinda new to php to im no

From Header Showing 'Unkown' In Hotmail? Why?
Code: $to = $row_GetID['email_addr'].',sales@mywebaddress.co.uk';
$subject = 'Thank you for you

Need help with an email blocker for a guessbook
I am new with php and here is a simple guessbook page but I am being hit with spam from a group of t

Post, not working, please help
The error is:
Method Not Allowed
The requested method POST is not allowed for the URL /student

File upload issues
Hi Guys,

Can anyone see any issues with this code:
Code: $setImage= 'productimages/' . dat

Displaying image from database
Hi,

I've got a site where that's got a database behind it. Currently it has loads of items in

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



 
© indyaspeak.com. All Rights Reserved.
Play Free Quiz and Win Cash