Question

any one prove 1=-1 quickly

Answer 1

Hey mate,

Interesting question BTW,

So,

We know,

= i^2
= i^6
= - 1

i = i^3

i^2 = 1

But we know,

i^2 = - 1

So equating the values,

Hence proved 1 = - 1

Hope this helps you out!

Answer 2

So before this we need to understand √-1=i(imaginary number)

so if you square both side then it will be like

√-1²=i² which is also equal to i²=-1

so now back to your question

there are going to be 6 steps

1)-1/1=1/-1

2)√-1/1=√1/-1

3)√-1/√1=√1/√-1 so as i said earlier √-1=i so

4)i/1=1/i

5)cross multiply

i²=1

as i said earlier i²=1 so it will be

6)-1=1