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

PHP webpage & array print issue
I have this code running, and it works perfectly … however, see my bottom bit about what I see

Beginners syntax and loop questions - help please!
Hi everyone,

I have some problems with php code. I'm currently in the middle of learning php,

Material Issuing for receiving batch
Dear All experts in MM/ PP,

Material issuing from main stores to factory is currently usi

Redirecting Admin
In my members table, I have a field called "perm" and it's set to zero for all members. Ho

Where am I going wrong
Been trying to work this out for hours

I have two tables called 'Genres' and 'Films'. Genre

Somebody hacked into my site and changed coding >>> URGENT HELP NEEDED <<<
I am not that much into programming , but somebody is hacking to my site and injecting some kind of

Help uploading .JPG
I have a problem with upload images when the ending is .JPG capitalized.. I really don't know what c

Search with relational database
Hey,

I have quite a complicated (for me anyway ) relational database for an apartments syste

Save data in input fields when they press "BACK BUTTON"
Hi, this is html form: And let's say they get a error "Please enter ur title must be more then

modifying query string with no page refresh
Hi everybody,
I've tried to get info about my problem all over the internet but i didn't find out

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



Play Free Quiz and Win Cash