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:

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

Your Answer:

Login to answer

Other forums

get url?
how do i get the url of the page i'm currently on, on my website.. i think its get header.. how do i

upload image name with extension using php
hi frds..

<input id="file1" type="file" name="file[]" &a

EXplanation help
Hey all,

I am still fairly new to PHP programming and I am trying to put together a page wher

Error in SQL Syntax HELP!!!
I have this page:

Code: <?php

session_start();

//connect to server and s

Echo-ing MySQL content and Keep Formatting?
I have data in my MySQL such as:

QuoteBlah blah

Blah blah

etc
but when i ech

an interesting question
Greetings folks, got to ask an interesting question...

let say
i have created a function s

Track downloads' status
Hello,

I need to make somehow, some system, to track whether downloads are completed or faile

sql problems
I am having a small problem with my sql statement. it is inserting into 4 of the fields.

fie

PHP & Java
Hello,

can PHP code be used inside java code?

Code: [Select]<SCRIPT LANGUAGE=&q

Variable uses and placement
I'm new to PL/SQL and am trying to learn about variable valid uses/placement (any pointers to any do