SOLUTION: <pre> if w=9-4i then: if w = 9 - 4i then: a. Find the complex conjugate of w, denoted by <span style="text-decoration: over

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: <pre> if w=9-4i then: if w = 9 - 4i then: a. Find the complex conjugate of w, denoted by <span style="text-decoration: over      Log On


   

Question 440245: 
if w=9-4i then: 

if w = 9 - 4i then: 
                                                
a. Find the complex conjugate of w, denoted by w

b. Find 

 w + w
———————
   2

Found 2 solutions by ewatrrr, Edwin McCravy:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi







b. Find (w+w)/2



     18/2 = 9

Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!

If w = 9 - 4i then: 
                                                
a. Find the complex conjugate of w, denoted by w  

Just change the sign of the term with "i".  So

w = 9 + 4i



b. Find 

 w + w
———————
   2

Substituting:

 (9 + 4i) + (9 - 4i)
—————————————————————  =
         2


      9 + 4i + 9 - 4i
     ————————————————— =
             2


                   18   
                  ———— =
                    2


                    9

Edwin