IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: spiderman on September 18, 2010, 09:53:55 am

Title: Complexxxxxx numberss..............
Post by: spiderman on September 18, 2010, 09:53:55 am

Het guys cud ull pls help me with this sum:

1/(z+2-i)........prove that the real part of this term is constant for -180 to 180 degrees.....
given that z=2cos@ + i(1-2sin@)

Title: Re: Complexxxxxx numberss..............
Post by: astarmathsandphysics on September 18, 2010, 11:26:23 am

here

Title: Re: Complexxxxxx numberss..............
Post by: rc32 on October 22, 2010, 04:43:08 pm

http://

how do the imaginary part disapear?  :o

Title: Re: Complexxxxxx numberss..............
Post by: astarmathsandphysics on October 22, 2010, 09:46:35 pm

is why complex numbers are complex