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Author Topic: Quadratic Formula  (Read 9205 times)

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Offline Munchor

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Re: Quadratic Formula
« Reply #15 on: October 31, 2010, 06:40:24 pm »
Yeah, I knew that it allowed imaginary numbers, but I haven't learn them at school yet =P
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Offline Michael_Lee

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Re: Quadratic Formula
« Reply #16 on: October 31, 2010, 06:42:57 pm »
Oh.  If this isn't too intrusive, may I ask what math level you're currently taking?
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Offline Munchor

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Re: Quadratic Formula
« Reply #17 on: October 31, 2010, 06:45:16 pm »
Quote from: Michael_Lee on October 31, 2010, 06:42:57 pm
Oh.  If this isn't too intrusive, may I ask what math level you're currently taking?

10th grade in portugal
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Offline meishe91

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Re: Quadratic Formula
« Reply #18 on: October 31, 2010, 08:12:01 pm »
Out of how many grades? I don't know the Portugal schooling system.

Also, could you post the original program you had instead of nemo's one that fixed the issue. I think we're all still curious about what was originally going on with the error and that would help figure it out.
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Offline Xeda112358

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Re: Quadratic Formula
« Reply #19 on: November 01, 2010, 01:07:38 am »
(sorry, but I had to optimize a little  ;D)

Code: [Select]
:ClrHome
:a+bi                             (Found in the [MODE] menu, allows imaginary numbers)
:Disp "AX²+BX+C=0
:Prompt A,B,C
:√(B²/4-AC
:Pause -B/(2A)+{Ans,-Ans

This won't use L₁, either. If you do want to store it to L₁, then just do Ans→L₁ after running the program because Ans will contain the results.
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Offline calcdude84se

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Re: Quadratic Formula
« Reply #20 on: November 01, 2010, 08:30:09 pm »
Quote from: Xeda112358 on November 01, 2010, 01:07:38 am
(sorry, but I had to optimize a little  ;D)
And I has to optimize it more. :P Also, your code doesn't work; it would have to be √(B²/4-AC)/A :(
Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -(B+{1,-1}√(B²+4i²AC))/(2A
Doesn't even change the mode settings ;D
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Offline Michael_Lee

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Re: Quadratic Formula
« Reply #21 on: November 01, 2010, 09:00:47 pm »
Quote from: calcdude84se on November 01, 2010, 08:30:09 pm
Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -(B+{1,-1}√(B²+4i²AC))/(2A
Doesn't even change the mode settings ;D

O.o
That's hyper-optimized!  If you remove the ClrHome and the Disp, you can get it to be under 50 bytes!
Does using i allow for an imaginary output even if you don't mess with the mode settings?
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Croquette:
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Offline calcdude84se

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Re: Quadratic Formula
« Reply #22 on: November 01, 2010, 09:05:01 pm »
Indeed :) A number that's already "imaginary" (even if that imaginary part is 0) will not give an error when you try to take its square root.
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Offline Runer112

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Re: Quadratic Formula
« Reply #23 on: November 01, 2010, 09:05:06 pm »
Quote from: calcdude84se on November 01, 2010, 08:30:09 pm
Quote from: Xeda112358 on November 01, 2010, 01:07:38 am
(sorry, but I had to optimize a little  ;D)
And I has to optimize it more. :P Also, your code doesn't work; it would have to be √(B²/4-AC)/A :(
Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -(B+{1,-1}√(B²+4i²AC))/(2A
Doesn't even change the mode settings ;D

Two can play the optimization game. :P

Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:-B+{1,-1}√(B²+4i²AC
:Pause Ans/(2A
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Offline calcdude84se

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Re: Quadratic Formula
« Reply #24 on: November 01, 2010, 09:07:59 pm »
Congratulations, you win. :D
* calcdude, admitting defeat, bows to Runer in acknowledgement of his victory.
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"People think computers will keep them from making mistakes. They're wrong. With computers you make mistakes faster."
-Adam Osborne
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Offline nemo

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Re: Quadratic Formula
« Reply #25 on: November 01, 2010, 09:24:56 pm »
Quote from: Runer112 on November 01, 2010, 09:05:06 pm
Quote from: calcdude84se on November 01, 2010, 08:30:09 pm
Quote from: Xeda112358 on November 01, 2010, 01:07:38 am
(sorry, but I had to optimize a little  ;D)
And I has to optimize it more. :P Also, your code doesn't work; it would have to be √(B²/4-AC)/A :(
Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -(B+{1,-1}√(B²+4i²AC))/(2A
Doesn't even change the mode settings ;D

Two can play the optimization game. :P

But only one may win...

Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:B+{1,-1}√(B²+4i²AC
:Pause -2C/Ans
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Offline Runer112

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Re: Quadratic Formula
« Reply #26 on: November 01, 2010, 09:30:33 pm »
Quote from: nemo on November 01, 2010, 09:24:56 pm
Quote from: Runer112 on November 01, 2010, 09:05:06 pm
Quote from: calcdude84se on November 01, 2010, 08:30:09 pm
Quote from: Xeda112358 on November 01, 2010, 01:07:38 am
(sorry, but I had to optimize a little  ;D)
And I has to optimize it more. :P Also, your code doesn't work; it would have to be √(B²/4-AC)/A :(
Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -(B+{1,-1}√(B²+4i²AC))/(2A
Doesn't even change the mode settings ;D

Two can play the optimization game. :P

But only one may win...

Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:B+{1,-1}√(B²+4i²AC
:Pause -2C/Ans

:o that works? In which case...

Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -2C/(B+{1,-1}√(B²+4i²AC
« Last Edit: November 01, 2010, 09:31:26 pm by Runer112 »
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Offline nemo

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Re: Quadratic Formula
« Reply #27 on: November 01, 2010, 09:32:00 pm »
oops. how'd i miss that.

but yeah, alternate form of the quadratic formula.
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Offline AngelFish

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Re: Quadratic Formula
« Reply #28 on: November 01, 2010, 09:38:56 pm »
Quote from: Runer112 on November 01, 2010, 09:30:33 pm
But only one may win...
Quote
Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:B+{1,-1}√(B²+4i²AC
:Pause -2C/Ans

:o that works? In which case...

Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -2C/(B+{1,-1}√(B²+4i²AC

And the winner is...

Code: [Select]
:ClrHome
:Pause "GOOGLE IT

 ;)

Only 11 bytes!
« Last Edit: November 01, 2010, 09:39:40 pm by Qwerty.55 »
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∂²Ψ    -(2m(V(x)-E)Ψ
---  = -------------
∂x²        ℏ²Ψ

Offline Runer112

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Re: Quadratic Formula
« Reply #29 on: November 01, 2010, 09:42:07 pm »
Quote from: Qwerty.55 on November 01, 2010, 09:38:56 pm
Quote from: Runer112 on November 01, 2010, 09:30:33 pm
But only one may win...
Quote
Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:B+{1,-1}√(B²+4i²AC
:Pause -2C/Ans

:o that works? In which case...

Code: [Select]
:ClrHome
:Disp "AX²+BX+C=0
:Prompt A,B,C
:Pause -2C/(B+{1,-1}√(B²+4i²AC

And the winner is...

Code: [Select]
:ClrHome
:Pause "GOOGLE IT

 ;)

Only 11 bytes!


Oh really?

Code: [Select]
:ClrHome
:Pause "JFGI"
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