Welcome Guest! To enable all features please Login. New Registrations are disabled.




Go to last post Go to first unread
Offline Вуаутвук  
#1 Posted : 26 February 2020 17:15:45(UTC)

Rank: Member

Groups: Registered
Joined: 08/11/2019(UTC)
Posts: 11

Some of my answers include "і" signs, what should I do to get a regular answer?
At first, I thought it was a problem in the cosine equations but later saw the same problem in other formulas.
TROPtaKhV_Lb2.sm (357kb) downloaded 10 time(s).

Wanna join the discussion?! Login to your SMath Studio Forum forum account. New Registrations are disabled.

Offline PompelmoTell  
#2 Posted : 26 February 2020 17:31:50(UTC)

Rank: Advanced Member

Groups: Registered
Joined: 23/12/2011(UTC)
Posts: 319
Location: italy

Was thanked: 109 time(s) in 93 post(s)
"i" indicates that this is a complex number with an imaginary part.
It is completely normal for the cases you have exposed since the square root of a negative number does not make sense in the real field (it is a complex number); in the same way, the arc-cosine makes sense in the real field only for numbers less than or equal to 1

thanks 1 user thanked PompelmoTell for this useful post.
on 27/02/2020(UTC)
Offline Jean Giraud  
#3 Posted : 26 February 2020 17:40:55(UTC)
Jean Giraud

Rank: Guest

Groups: Registered
Joined: 04/07/2015(UTC)
Posts: 6,866

Was thanked: 981 time(s) in 809 post(s)
literal 'l' is too confusing, use λ [Greek]
imaginary 'i' and ordinary 'i' are not compatible
especially in for loop... please check.

TROPtaKhV_Lb2 Test back.sm (357kb) downloaded 21 time(s).
thanks 1 user thanked Jean Giraud for this useful post.
on 27/02/2020(UTC)
Users browsing this topic
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.