The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

FP2 complex nunbers q

Am I allowed to do the sign changing with mods? Like this... the thing I did at the end.
Posted from TSR Mobile
1368889355533.jpg35.1KB
1368889492927.jpg41.5KB
Original post by cooldudeman
Am I allowed to do the sign changing with mods? Like this... the thing I did at the end.
Posted from TSR Mobile


Absolutely. IF you envisage an argand diagram and a point (a,b) that represents a particular complex number, the magnitutde of z represents the length from the point to the origin (sqrt[x^2+y^2]). If you were to multiply it by -1, it would just be in the opposite direction and hence still the same length.
Reply 2
Avatar for cooldudeman
cooldudeman
OP
18
Original post by hecandothatfromran
Absolutely. IF you envisage an argand diagram and a point (a,b) that represents a particular complex number, the magnitutde of z represents the length from the point to the origin (sqrt[x^2+y^2]). If you were to multiply it by -1, it would just be in the opposite direction and hence still the same length.


Thanks thats good to know

Posted from TSR Mobile

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you