# X^2 - 1234567x + 8 = 0

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### #1 Ivaylo

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Posted 15 November 2004 - 09:22 AM

solve(x^2-1234567x+8=0,x) {EXE}

{x=6.500049494 e-6,x=1234567}

Richtige ergebnis(Correct result):
x1 = 6,480004730 e-6

DE - Warum ist das so, hat jemand eine Idee wie das ohne Numerischemetode zum bewoltigen ist!?

EN - Why like that, has is someone an idea as without numeric death to to master is!?

numerische L?sung (numeric Solution):

x1 = (8)/(1234567/2+(-1234567)^2/4-8)^(1/2) = 6,48000473e-6

### #2 vstrasser

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Posted 15 November 2004 - 11:37 PM

I tried

solve(x^2-1234567x+8=0,x) {EXE}

and the result was {x=6.48E-6, x=1234567} what was the expected result.

Did you updated your CP operacional system? First OS (v1.0) has a lot of bugs that was solved in the newest version (v1.24). It's really interesting update it.

### #3 Ivaylo

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Posted 17 November 2004 - 10:04 AM

I tried

solve(x^2-1234567x+8=0,x) {EXE}

and the result was {x=6.48E-6, x=1234567}  what was the expected result.

Did you updated your CP operacional system? First OS (v1.0) has a lot of bugs that was solved in the newest version (v1.24). It's really interesting update it.

<{POST_SNAPBACK}>

DE - Ja, ich hab das Update seit 04.03.2004.

Und nein das ist nicht der korrekte Antwort. Genauigkeit fehlt.
Genau: x1 = 6,48000473 e-6
Da ist ein feiner unterschied!?

EN - Yes, I have the update since 04.03.2004.

And no that is not the correct answer. Accuracy is missing.
Exactly: x1 = 6.48000473 e-6
There is more finely differentiated!?

Danke! Thanks!

### #4 R00KIE

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Posted 17 November 2004 - 10:52 AM

Why didn't you tried to get EXACT results

you would get x=(1234567+-sqrt(1524155677457))/2

with no loss of acuracy, just like you wanted

but any way x=6.48000473044*10^-6 or x=1234567

### #5 Ivaylo

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Posted 19 November 2004 - 01:17 PM

Why didn't you tried to get EXACT results

you would get x=(1234567+-sqrt(1524155677457))/2

with no loss of acuracy, just like you wanted

but any way x=6.48000473044*10^-6 or x=1234567

<{POST_SNAPBACK}>

DE - Wie !????
Ich finde dieses Modus nicht.

EN - How!????
I do not find this mode.

### #6 qwerty841

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Posted 19 November 2004 - 06:54 PM

In the main application, there is a button that looks like this:
if you push it, it should switch between exact and approx. modes

### #7 Overlord

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Posted 19 November 2004 - 06:57 PM

In Settings>Setup>Basic Format, uncheck Decimal Calculation

### #8 Ivaylo

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Posted 20 November 2004 - 09:49 AM

DE:
O.K.
Aber ich kriege das Ergebnis von R00KIE nicht, egal was ich mache.
Und f?r mich ist das nur durch numerischen Methoden zurechnen.
Leider ist es nicht sehr leicht das passende Methode zufinden.

EN:
O.K.
But I wars the result of R00KIE not, all the same which I make.
And for me is only by numeric methods add.
Unfortunately it is not to be found very easily suitable method.

x=6.48000473044*10^-6 or x=1234567

### #9 R00KIE

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Posted 23 November 2004 - 10:42 AM

I forgot to say that i'm using my HP49G

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