(sqrt(-2))^2

[compsystems]

(10-06-2016 08:19 PM)parisse Wrote:  Parenthesis are *not* required in algebraic (1-d) entry after √. This is the reason why √ is different from sqrt.

ok, but it gives clarity to the expression
√(-2)-3 == √-2-3 [enter] 1
√-2-3 ≠ √(-2-3) [enter] true

the ti68k calc, the operator √ automatically put brackets
[√] -> √(), you avoid adding them into compound expressions


why different answers? hp-prime versus Wolfram/hp48/50g/tiv200/ti-nspireCXcas/...

(10-06-2016 08:19 PM)parisse Wrote:  A solution to the UI/CAS parser misbehaviour in 2-d entry would be to add parenthesis outside of the sqrt before calling the CAS parser.

The template √▣ has a bug
[√▣] +[2] + [±] + [>] + [spc] « out of the end symbol radical (¬) » + [^2] returns 2 //
Why?

clearly shows that the ^ 2 is outside the radical