I broke maths while lying in bed feeling tired

cos(x) = cos(-x)
cos^-1(cos(x)) = cos^-1(cos(-x))
x = -x
1 = -1
2 = 0

Oh crap, this is going to require us to reconsider the very foundations of modern mathematics.

>x=-x
>2x=0
>x=0
nice bait

[eqn] e^{2\pi i}=1 [/eqn]
[eqn] ln(e^{2\pi i})=ln(1) [/eqn]
[eqn] 2\pi i=0 [/eqn]
[eqn] \pi=0 [/eqn]

x^2 = -x^2
x^2/x = -x^2/x
x = -x

oh no I broke the universe

OP here, I started from something THAT IS TRUE. Don't shitpost with this starting from x = -x nonsense.

you start with a false premise
sage

Wait, this one actually confuses me.

Can't assume logs work like that for complex numbers

Are you retarded or just haven't taken grade 6 trigonometry yet?

You don't know anything about the arccos function do you?

cos(pi)=cos(10001pi)
arccos(cos(pi))=arccos(cos(10001pi))
pi=10001pi
1=10001
HURR DURR