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(sqrt(-2))^2
10-05-2016, 02:33 PM (This post was last modified: 10-05-2016 02:35 PM by retoa.)
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retoa Offline
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(sqrt(-2))^2
Hello !

I try to calculate (sqrt(-2))^2, which should give -2.
In home mode it works fine.

In CAS mode it works using brackets (first picture).
After pressing enter the square root will be represented without brackets, it will give (sqrt(2)*i)^2 which simplified gives -2 (second picture).

If I try to enter it without brackets (third picture), when I press enter the root becomes sqrt((-2)^2) and the answer will be 2, which is wrong (fourth picture).

Any hints?


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Messages In This Thread
(sqrt(-2))^2 - retoa - 10-05-2016 02:33 PM
RE: (sqrt(-2))^2 - toml_12953 - 10-05-2016, 03:01 PM
RE: (sqrt(-2))^2 - retoa - 10-05-2016, 03:04 PM
RE: (sqrt(-2))^2 - parisse - 10-05-2016, 07:13 PM
RE: (sqrt(-2))^2 - retoa - 10-05-2016, 09:24 PM
RE: (sqrt(-2))^2 - Tim Wessman - 10-05-2016, 10:37 PM
RE: (sqrt(-2))^2 - parisse - 10-06-2016, 05:10 AM
RE: (sqrt(-2))^2 - retoa - 10-06-2016, 06:47 AM
RE: (sqrt(-2))^2 - Tim Wessman - 10-06-2016, 02:12 PM
RE: (sqrt(-2))^2 - parisse - 10-06-2016, 06:05 PM
RE: (sqrt(-2))^2 - John P - 10-06-2016, 07:26 PM
RE: (sqrt(-2))^2 - compsystems - 10-06-2016, 07:58 PM
RE: (sqrt(-2))^2 - compsystems - 10-06-2016, 04:01 PM
RE: (sqrt(-2))^2 - parisse - 10-06-2016, 08:19 PM
RE: (sqrt(-2))^2 - compsystems - 10-06-2016, 08:36 PM
RE: (sqrt(-2))^2 - parisse - 10-07-2016, 06:27 AM
RE: (sqrt(-2))^2 - compsystems - 10-08-2016, 03:38 AM



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