a series problem in vb

Question

1.00/5 (1 vote)

See more:

hi,,
am working on visual studio 2008 on console application
and am having a trouble solving this problem:

e=x+x^2/2!+x^3/3!+...

plzz any help i'd appreciate it

Posted 6-Apr-10 8:36am

lanoush

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Answer 1 · 2010-04-06T09:33:00

Solution 2

What is you trouble about?
You know, Visual Basic provide iterations.

Posted 6-Apr-10 9:33am

CPallini

Luc Pattyn · Answer 2 · 2010-04-06T10:01:00

Hi,

first of all your formula is wrong, the right hand side is the infinite polynomial that yields exp(x) or e^x, not e.

now what is your problem? the right hand side is the sum of terms, each term can easily be calculated once the value of the previous one is known. Two suggestions:
- use doubles
- make sure to continue the series long enough, i.e. till the newest term is only a fraction (say 1/10^15) of the partial sum so far.

A simple loop is all it takes!

:)

Gregory Gadow · Answer 3 · 2010-04-06T09:26:00

Solution 1

One word: Recursion.

The rest can be found in your text book.

Posted 6-Apr-10 9:26am

Gregory Gadow