I'm taking an advanced calculus course next year and thought that it would be helpful if i had the cubic formula on my calc. (Yes it does exist). I caould probably figure it out but for one part. http://www.johnkerl.org/doc/cubic-formula.pdf has the steps to finding the three roots. im having trouble with the first and second parts. For the first part, do i need to just divide each of the coefficients individually? And for the Second, how in the heck do i substitute x for (y-a/3)? Anhy help would be appreciated. You'll even get a cookie.
Edit: where he says x³+py+q he means y³+py+q
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