I'm going nuts here and I can't figure this out. I have two complex vectors:(adsbygoogle = window.adsbygoogle || []).push({});

A=(1+i)x + (1)y +(i)z

B=(4-i)x +(0)y + (2-2i)z

If I do the dot product of these on my calculator I get 1 + 7i, however when I do this by hand I keep getting 7 +5i. What am I doing wrong? When figuring this out by hand I am going by the assumption thatAB=AxBx + AyBy + AzBz.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Dot Product Calculator Quandry

**Physics Forums | Science Articles, Homework Help, Discussion**