QUADRATIC SOLVER

[lapo3399]

Heres a program I made (i just learned turing today) for solving quadratic equations in math. Just enter the a, b, and c values and itll give u the roots. (y=ax**2+bx+[b]c[/b
WARNING!!!-THE PROGRAM MAY HAVE AN ERROR IF THERE ARE NO REAL ROOTS

[Tony]

don't you mean

code:

e:=(b**2-4*a*c)     if e<0 then     put "There are no real roots"

because otherwise (sqrt(e)) the program will crash.

its a good start, but now you should try to encorporate all of the roots. Its not that hard. Here's a hit

code:

if e<0 then e *= -1 flagi := true

and here you go - squareroot part becomes possitive, you just got to keep in mind that you have to add in "i" later on (but flagi is marked as true to remind you)

[Andy]

heh i wrote one on my ti83 that can do the unreal roots.. too bad i lost it :'(

[Tony]

I had lots of stuff on my TI83.. you know how you used to have to do dozens of the same problems over and over with different numbers? yeah - just solve once for the variable values instead, and write down the function in TI

[Andy]

heh yea.. same here