What i am doing wrong here . and if i am correct then can any one explain to me how $1=-1$
97952
Square root of 1 is (not) -1
141540
What is wrong with the following "proof" that $e=1$?
13688
Why are these numbers not equal?
62382
I suppose $(a,m)=(a-1,m)=1$, show that $1+a+a^2+\ldots+a^{\phi(m)-1}\equiv0\pmod m$
82097
If $A \succeq B$, is it true that $B^{-1} \succeq A^{-1}$?
22397
Is 0.9999... equal to -1?
67923
"num - 1" vs "num -= 1"
14455
can you explain me the working of this circuit in detail?
95057
Possible fake proof of $1= -1$
6650
Why $\sqrt{-1 \times -1} \neq \sqrt{-1}^2$?
149954
Subtraction of a negative number
6721
math fallacy problem: $-1= (-1)^3 = (-1)^{6/2} = \sqrt{(-1)^6}= 1$?
3712
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
13012
Why can a = b imply 2 = 1?
17963
I have learned that 1/0 is infinity, why isn't it minus infinity?
108633
Why $f^{-1}(f(A)) \not= A$
155897
Proof by induction - is this correct?