Algebraic Operations with Complex Numbers Assignment Help

Assignment Help: >> Complex number >> Algebraic Operations with Complex Numbers

Algebraic Operations with Complex Numbers:

  • Addition : (a + ib) + (c+id) = (a + c) + i ( b+d)
  • Subtraction      : (a + ib) - (c+id) = (a - c) + i ( b - d)
  • Multiplication   : (a + ib) (c+id) = (ac - bd) + i ( ad + bc)
  • Division           :  1651_Algebraic Operations with Complex Numbers.png  ( when one of c and d is non-zero)

                                    = 721_Algebraic Operations with Complex Numbers1.png

Square root of a Complex Number:

Suppose z1 = x1 + iy1 be the provided complex number and we have to get its square root.

Consider x + iy = (x1 + iy1)½  

2276_Algebraic Operations with Complex Numbers2.png

Example: Calculate the square root of 8 - 15i.

Solution:        Here y = -15 < 0

              13_Algebraic Operations with Complex Numbers3.png

 

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