/sci/ - Science & Math

[Anonymous No.1135560]

x = ?

/sci/, I give up. I'm on vacation and I really want to know the answer for this. I just need to invert the goddamn function. halp.

But apparently I just don't have the mental power right now.

inb4 "do your own homework", it's not homework.
it's for a new model of hyperbolic geometry I cam up with.

[Anonymous No.1135571]

What the fuck do you mean, "the answer"?

[Anonymous No.1135579]

>come up with a new model of hyperbolic geometry
>can't manipulate quadratics

yeah nice try

[sage No.1135581]

sage

[Anonymous No.1135586]

>>1135571
Read the post man.
>x = ?
>invert the function

>>1135579
I did. It's based on a gnomonic projection from the poincare model as embedded on a hemisphere. I think it will be equal-area, which would be quite awesome.

Now quit being douchebags, guise.

[Anonymous No.1135602]

Here you go, bro.

[Anonymous No.1135608]

http://www.wolframalpha.com/input/?i=x%2F%281-x^2%29+inverse

[Anonymous No.1135610]

>>1135602
sonamdisappoint.jpg

[Anonymous No.1135611]

y = x / (1 - x^2)
y(1-x^2) - x = 0
-yx^2 -x + y = 0
Quadratic Formula
a = -y b = -1 c = y
(1 +/- Sqrt(1 + 4y^2)) / (2y) = x = f^-1(x)

[Anonymous No.1135621]

>>1135559

tinyurl dot com/3ye3cob you WILL take down the illegal clone cdf5759a6810dfb9e601480def9b3029

[Anonymous No.1135612]

>>1135608
holy shit a calculator
tnx
moving forward

[Anonymous No.1135613]

>>1135611
>>1135608
Trolls

>>1135602
Correct answer.

[Anonymous No.1135620]

>>1135602

[Anonymous No.1135626]

>>1135613
Dude, that first one isn't a troll. That's the same answer you called correct.

[Anonymous No.1135635]

Switch x and y
Multiply both sides by (1-y^2)
Divide both sides by (1-y^2)
Left with x = y

502 looks good to me.