Saturday, March 24, 2007

My best buddy for next week

How to solve this brain-wacking equation??
.
x^3 + (10^-7.5)x^2 - (3.162 x 10^-10)x - (3.1623x10^-22) = 0
.
Easy way out - use Microsoft excel to plot a graph....

7 comments:

Currytan said...

MATLAB will be a better way. =)

The FABtastic One said...

i got graphing calculator!!!!

kr said...

currytan: isit?? then I am handicapped already!! I don't know how to use MATLAB... Argzzz
.
Fabtastic: erm, I don't have a graphic calculator leh.. hmmm...

pw said...

dissolve in water and do titration with standard to find unknown x

Currytan said...

Use the following commands for MATLAB:

p = [a b c d] --this is to create a polynomial.

then, roots(p) -- this is to ask matlab to compute the roots of p for you! =)

kr said...

pw: haha, sure sure, but then how to get the numbers into the standard?? hmm, looks like have to consult a Maths Major already... haha

currytan:ohh, icic, hmm looks easy, hah kk thanks, then I go sch and try out the MATLAB.haha

pw said...

weigh the unknown first then dissolve and make to mark in at 250ml volumetric flask. Then titration will tell u the moles. Aiya, if u still duno then i give me personal coaching.