What's wrong in this proof of $i^2=1$
121355
What is the mistake?
147528
Where's the error in this $2=1$ fake proof?
153532
Proving $a^2$ is even $\implies$ $a$ is even by contradiction
38995
Induction proof that $\sum_{j=n}^{2n-1} (2j + 1) = 3n^2$ - what happened?
40532
Seems that I just proved $2=4$.
43834
Simple Complex Number Problem: $1 = -1$
5679
Why is $2\pi i \neq 0?$
55428
Inductive proof of $a_n = 3*2^{n-1} + 2(-1)^n$ if $a_n = a_{n-1} + 2*a_{n-2}, a_1 = 1, a_2 = 8$
121052
Where is the mistake? $-1=(-1)^{2/2}=\left(\left (-1\right)\displaystyle ^2\right)^{1/2}=1^{1/2}=\sqrt 1=1$
75387
A proof that $1=2$. May I know why it’s false?
26501
Proof using complex numbers
148647
If $\dfrac{4x^2-1}{4x^2-y^2}$ is an integer, then it is $1$
14633
What's the thing with $\sqrt{-1} = i$
79274
$1=2$ | Continued fraction fallacy
145397
How to prove that for every $i$, $a_i = i$
108923
What is wrong with this false proof? $-1=(-1)^1=(-1)^\frac{2}{2}=((-1)^2)^\frac{1}{2}=\sqrt{(-1)^2}=\sqrt{1}=1$
138683
Proving $\prod_{i=2}^{i=n} \left(1-\frac{1}{i^2}\right) = \frac{n+1}{2n}$ by induction