23/07/18 11:41:41.14 wE+74BzaH.net
> a=sqrt(2)
> a^2
[1] 2
> a^2-2
[1] 4.440892e-16
> a^2==2
[1] FALSE
23/07/18 11:41:41.14 wE+74BzaH.net
> a=sqrt(2)
> a^2
[1] 2
> a^2-2
[1] 4.440892e-16
> a^2==2
[1] FALSE
23/07/18 11:41:41.14 wE+74BzaH.net
> a=sqrt(2)
> a^2
[1] 2
> a^2-2
[1] 4.440892e-16
> a^2==2
[1] FALSE