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Stupid question

  • Thread starter uniidiot
  • Start date
24
0
this will probably seem like a really stupid question but here goes.

If z = 3 + 2i find the following

i) z

ii) z x z(with a horizontal line above it)

iii) z^2

what does the horizontal bar mean, i can't find it in my reivsion books lol.

Thanks
 

HallsofIvy

Science Advisor
Homework Helper
41,709
876
I suspect that a) was [itex]\overline{z}[/itex] rather than just z itself!

[itex]\overline{z}[/itex] is the "complex conjugate", a remarkably useful form: if z= x+ iy then [itex]\overline{z}[/itex]= x- iy.
 
24
0
thankyou!

and yes a) was suposed to be [itex]\overline{z}[/itex] lol
 

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