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
Trending TodaySee what people are reading
No comments posted yet

Your Answer:

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

Add trigger to UpdatePanel programmatically
Hi,I'm working on a website which uses AJAX and Masterpages. What I have is an AJAX UpdatePanel whi

Remove directories not empty
hi,
i have an array that contains some names (1,4,6,56...). Every integer is a name of a folder.<

$_GET problem
Hi all,

Have a bit of a problem with a little piece of code, I am not sure if this should be

what business processes?
Hi,

A general question. What business processes (like OTC - Order to Cach, P2P, R2R etc)

DataTable Help Required
Hi all I am creating an app that utilises and MS Access back end and queries it quite a bit at vario

Can't find the problem (no error message)!
OK, here's the deal. This code is really weirdly formatted (sorry!) and hard to understand, so I'm g

Only add new information from XML to MySQL
What I am doing, is taking a xml file, and adding the values to a database. However, what I want to

Storing user data help?
Hey Guys,

I'm not use if this question is to broad but I can always give you more informatio

Doubles are giving me problems
Ok so, first of all i made a double = 0.05, but when running the debugger it shows up as 0.04999. I

Uploading/Downloading files stored in MySQL database
Hey all,

This problem just came up in my website and I'm having a hard time figuring out what

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