Finding power of complex number by demoirvres theorem


Assignment:

Q1. Find the absolute value of the following complex number:
a. z = 2 + 5i

Q2. Choose the rectangular coordinates for the following polar coordinate:
a. (-6, 3π/2 )

Q3. Determine the rectangular form of the complex number:
z = 8 (cosπ/2  = i sinπ/2 )

Q4.   Find the polar form of the following complex number:
a. z = 7 ( cos3π/2 +  i sin3π/2  )

Q5.   When plotted on the rectangular coordinate system in which quadrant would the following point be located for this polar coordinate?
a. ( -2 , 2π/3  )
b. ( -3, π/4  )

Q6. Find the power of the following complex number:
z = ( √2 - i  )4

Q7. Find the value of the given complex number:

i5

Q8. Choose the polar coordinates for the following rectangular coordinate:
( -1, -√3 )

Q9. The following polar coordinates are multiple representations of the same point, True or False?
    ( -5, 7π/4 )  ( -5, 5π/4 )

Q10. Find the polar form of the following expression:
3√2   -   3√2i

Q11. Write each complex number in rectangular form. If necessary round to the nearest tenth.

4( cos5π/6 + i sin 5π/6)

Q12. Use DeMoirvre’s Theorem to find the indicated power of the complex number. Write answer in rectangular form.

[1/2 (cos π/10 + i sin π/10)]5

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Mathematics: Finding power of complex number by demoirvres theorem
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