(sqrt(-2))^2
10-08-2016, 03:38 AM
Post: #17
 compsystems Senior Member Posts: 1,197 Joined: Dec 2013
RE: (sqrt(-2))^2
https://en.wikipedia.org/wiki/Order_of_operations says

The root symbol, √, requires a symbol of grouping around the radicand. The usual symbol of grouping is a bar (called vinculum) ̄ ̄ over the radicand √ ̄ ̄. Other functions use parentheses around () the input to avoid ambiguity.

https://en.wikipedia.org/wiki/Vinculum_(symbol)

on 2-D template of √ included the symbol ̄ ̄ that distinguishes or group the expression of radicand, in 1-D the only way of grouping expression of the radicand is to use Bracket

https://en.wikipedia.org/wiki/Bracket_(mathematics)

√( ), parentheses
√[ ] square brackets
√{ } braces
√<> angle brackets

This is the convention that follow several CAS I've tried
√[-2]^2 == √(-2)^2 == SQRT(-2)^2 = -2 and not SQRT(-2^2)

another symbol to delimit can be ¬

√ ¬

√-2¬^2

I suggest that in Algebraic mode (1-D)
pressing √ key, the parentheses is incorporated on entry line

[√] -> √()
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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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