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#1 2012-10-20 18:49:48
- Harold
- Guest
Cubic equation
How do i solve a equation of this form ax^3+bx^2+cx+d=0 is there a formula?please explain
#2 2012-10-20 19:34:50
- bobbym
- Administrator
Online
Re: Cubic equation
Hi Harold;
Yes, there is a formula but no one ever uses it.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#3 2012-10-20 19:45:15
- zetafunc.
- Guest
Re: Cubic equation
It would be helpful to remember but you're unlikely to use it very often. Try to find the first by inspection (or iteration if you have a calculator), then determine the quadratic factor from there.
#4 2012-10-20 19:53:55
- bob bundy
- Moderator
Offline
Re: Cubic equation
hi Harold,
Have a look at:
http://www.mathisfunforum.com/viewtopic.php?id=17660
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#5 2012-10-21 07:32:14
- bobbym
- Administrator
Online
Re: Cubic equation
Or one even nastier than that.
http://www.mathisfunforum.com/viewtopic … 00#p198900
See post#6.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.