Random math thing
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7 Dec 2009, 21:06
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Journals
Let's say that
A = B
ok and now we multiply it by A
A^2 = AB
then we subtract B^2 from both sides
A^2 - B^2 = AB - B^2
And now we edit it a bit
(A-B)(A+B) = B*(A-B)
We divide both sides with A-B and we get
A+B = B
Let's say that A=1=B and we get
1+1 = 1
2 = 1
What's wrong, help !?
(and yes I know what's wrong but let's see if you find it too)
A = B
ok and now we multiply it by A
A^2 = AB
then we subtract B^2 from both sides
A^2 - B^2 = AB - B^2
And now we edit it a bit
(A-B)(A+B) = B*(A-B)
We divide both sides with A-B and we get
A+B = B
Let's say that A=1=B and we get
1+1 = 1
2 = 1
What's wrong, help !?
(and yes I know what's wrong but let's see if you find it too)
A = B
(A-B)(A+B) = B*(A-B)
a-b = 0
0 x (A+B) = B x 0
0 = 0
although I think raichu means the same, he just didn't put it so clearly :D
i found it
A-B=0
every line which involves A-B equals 0 and also A^2-B^2=0 and AB-B^2=0 so everything after the second step is the same as 0=0
but too be true it is all bullshit, maths are based on 5 presumptions(axioms) which can't be proven.
I found it kinda boring stuff, so don't ask me more, I don't even remember much of it anymore :/
the answer of course
so maybe you don't suck there either ;)
answer: nothing
thats wrong
but tricky !! :P
took me some time to realize it also, so wanted to see how ppl in here manage in it :)
I added it later, saw plekter use it in some other journal so I thought it suits well in here :D
1/k * e^-1/2x²+kx
thats what i mean http://www.rither.de/images/mathematik/analysis/differentialrechnung/wendepunkte/wendepunkt.gif
k =/= 0
or 2nd differential = 0
dunno the english terms rly.
ur function is f(x)
so f''(x)=0 gives the x-coordinate of the turning point
3! = 6
4! = 24
5! = 120 ?
5! = 1*2*3*4*5
npnp
we used "j" as well ofc
I added it just later :)
YOU IZ NOT GOOD IN MATHS :DD my math teacher would give you 0 points and write a nice comment that you have to go back to 1st class ;)) like he did it to my friends