Properties
Similar Topics
Statistics
Comments
5
Participants
3
Subscribers
3
Votes
1
Views
318
Share
solving system of equations produce complex numbers 2
Not a Problem
2nd try
Why does this system of equations give complex roots for solution?
 GeoGebra
 Help
 Partners

Contact us
 Feedback & Questions
 This email address is being protected from spambots. You need JavaScript enabled to view it.
 +43 677 6137 2693
© 2019 International GeoGebra Institute
maybe because of the entry mode (use of cos and sin)
try u = cos(a), v = sin(a)
and linearise cos(2a) and sin(2a) before using ratkaise
but it's better to solve with just a pen because this is just two lines
This seems OK:
Also simplifying the answer is fine:
Sorry, there's no other improvement we can make with this
I can undertand that this can very easily be solved without a computer. My question was why. Does this mean that if I have equations with constansts cos(2a), sin(2a) and a, there is a possibility that I get complex roots?
Thanks Mike telling about the Simplify and trigexpand
M
Sorry, yes
Comments have been locked on this page!