# Algebra help... I forgot everything!

**URL:** <https://forum.kirupa.com/t/algebra-help-i-forgot-everything/150042>\
**Category:** random\
**Created:** [June 3, 2005, 6:53am UTC](https://forum.kirupa.com/t/algebra-help-i-forgot-everything/150042 "2005-06-03T06:53:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![eilsoe](https://avatars.discourse-cdn.com/v4/letter/e/9fc348/32.png) [@eilsoe](https://forum.kirupa.com/u/eilsoe)\
**Post date:** [June 3, 2005, 6:53am UTC](https://forum.kirupa.com/t/algebra-help-i-forgot-everything/150042/1 "2005-06-03T06:53:51Z")

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dudes, I need some math help, I’m trying to build a Lorenz attractor in Processing, and I’ve run into some basic equation trouble :-/ I admit it’s been years since I did any of this, and I can’t remember a thing ☹

I know there’s a handful good mathheads here 🙂

here the equations for all 3 points:

x = x + ad(y - x)  
y = y + d(bx - y - zx)  
z = z + d(xy - cz)

my problems lie within the parantheses’, I forgot how to multiply into a parantheses :-/

the values for a, b, c and d(T) are:

a = 28, b = 8/3, c = 10 and d(T) = +0.02

can anyone please help me with this? 🙂