admin

16 Questions
1410 Answers

+4

2323

1

+3146

Neue Datenschutzrichtlinie, Mai 2018

Hallo,

Diese Webseite wurde aktualisiert mit kleineren Anpassungen an die DS-GVO.
mehr ..

Off-Topic

admin 27.05.2018

+19

3502

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+3146

New Privacy Policy, May 2018

Hello,

this website was updated today because of some legal changes here in Europe. ("GDPR").
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Off-Topic

admin 27.05.2018

+6

2284

1

+3146

New version is online for two weeks now, any problems?

Hi,

Any problems? You can use the "Report a Problem" link in the footer, or send me an email to britnex+bugs@gmail.com
mehr ..

admin 12.09.2015

+20

2725

16

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New website is online.

Hi,

Any problems? You can use the "Report a Problem" link in the footer, or send me an email to britnex+bugs@gmail.com , thank you!
mehr ..

Melody ●●●●●●●●●●●●●●●●

admin 30.08.2015

+7

2590

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Neue Version der Webseite ist online

Hi,

Probleme bitte per Email an britnex+bugs@gmail.com melden, Danke!
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admin 30.08.2015

+67

4

4479

11

+3146

three times ten to the power of negative 2

help what is 3x10to the power of negative 2

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admin 26.01.2012

+3146

0

(5x-7)²=25x²-21
(5x-7)^2=25x^2-21
25x^2-70x+49 = 25x^2-21
| - 25x^2
-70x+49 = -21
| -49
-70x = -70
| /-70
x = 1

[input](5x-7)^2=25x^2-21[/input]

admin20.11.2012

+3146

0

( x-4 ) ²= x²-16
( x-4 )^2= x^2-16
( x-4 )*( x-4 ) = x^2-16
x^2-8x+16 = x^2-16
| -x^2
x^2-8x+16-x^2 = x^2-16-x^2
x^2-8x+16-x^2 = -16
-8x+16 = -16
| -16
-8x+16-16 = -16-16
-8x = -32
| /-8
-8x = -32
x = 4

[input]( x-4 )^2= x^2-16[/input]

admin20.11.2012

+3146

0

[input]-3+(-17235647)[/input]

admin20.11.2012

+3146

0

hover the mouse over a button -> description tooltip

admin20.11.2012

+3146

0

12x+2-3x=10-(x-2)
12x+2-3x=10-x+2
9x+2=12-x
9x+2+x=12-x+x
10x+2=12-0
10x+2=12
10x+2-2=12-2
10x=10
10x/10=10/10
x = 1

[input]12x+2-3x=10-(x-2)[/input]

admin20.11.2012

+3146

0

[input]x+2/x-5=x-2/x-7[/input]

[input](x+2)/(x-5)=(x-2)/(x-7)[/input]

admin20.11.2012

+3146

0

[input]log(x)=1[/input]

admin20.11.2012

+3146

0

there is an undocumented "trick". place "=" at the end of your input for symbolic solution:
[input](-5u^2-3u-6)-(2u^2+3u-1)+(4u^2+9u+1)=[/input]

admin19.11.2012

+3146

0

mit x=0.3:
[input]log((0.3+0.05)/((1-0.3)+0.05))[/input]

auflösen nach x:
[input]solve( y = log((x+0.05)/((1-x)+0.05)), x)[/input]
also:
x=(1/20*(21*exp(y*ln(10))-1))/(exp(y*ln(10))+1)

eingesetzt und x zurückgerechnet:
[input](1/20*(21*exp(-0.33099321904142*ln(10))-1))/(exp(-0.33099321904142*ln(10))+1)[/input]
x=0.30000000000000603241 (0.3+Rundungsfehler)

admin19.11.2012

+3146

0

[input]100eur*25%[/input]

admin19.11.2012