Hi /sci/ I created a paradox in mathematics.
Where is my fields medal?
>>8812228
Holy fuck you are retarded. This bait is so fucking weak. Please kill yourself.
>>8812228
1/cos(x) != cos^-1(x) you fucking retard
>>8812228
You've just conflated two different symbols [math] \cos ^{-1} \left ( \theta \right ) := \arccos \left ( \theta \right ) [/math]. While [math] 1/ \cos \left ( \theta \right ) = \left ( \cos \left ( \theta \right ) \right) ^{-1} [/math]
>>8812232
>This bait is so fucking weak.
>Holy fuck
>kill yourself
What a paradox!
>>8812238
You see, my thread really did create a paradox.
>>8812228
amusing but I don't think an innocent thread deserved to die for this
>>8812252
Bump.
>>8812228
the left is the solution for [math]\lambda\leq1[/math] and the right for [math] \lambda\geq1[/math]
This is bait, arccos(cos(x)) =/= x
Wolfram it and show me I am wrong.
This isn't a paradox, it is just bad math
>>8812228
it would appear from this thread that there exists a rare fetish whereby people get off on being rightly called idiots. the question is this: why do we lend them a hand?
this is why the -1 notation is retarded
>>8812228
holy shit lmao
inverse and arccos are not equivalent you dip
>>8813860
helps weed out retards early
>>8812228
>>8812228
>Look guys i found an inconsistency xD. Wheres my prize for shit bait
>>8813864
arccos and inverse cos have different domain implications, but that wasn't the problem in this proof. It was that he was confusing inverse cos with cosine to the negative 1 power (which is 1/cos x, usually called secant).
To the OP: The -1 exponent means inverse function when applied to a function name. When you write cos(x), cos is the name of the cosine function, much like f is the name of f(x). Just like f^-1(x) doesn't mean 1/f(x), cos^-1(x) doesn't mean 1/cos(x).