Yeah bobbym you are right.

Hmmm, I am almost never right.

Did you introduce yourself in Introductions?

]]>That is weird. I will find it again.

Try this:

]]>I want to know who has derived it and how has it been derived.

Lodovico Ferrari is credited with the discovery of the solution to the quartic in 1540.

The derivation given above was done with Mathematicas help.

And yeah please tell me a similar direct formula to solve cubic equations also. It would be vey helpful to me.

One way to solve a cubic is given here. I can not recommend it.

http://www.mathisfunforum.com/search.ph … 214129&p=3 in post #54

]]>And yeah please tell me a similar direct formula to solve cubic equations also. It would be vey helpful to me.

]]>You are not required to memorize it. You can always look it up if necessary. Also, there are other methods to get roots that are more amenable to computation, these should be used when possible.

]]>It is not easy to remember all this formula, few formula we can remember because there are some formulas which are like some basic formulas which we can use sometimes.

]]>The quadratic formula solves quadratics, the quartic, quartics.

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