discussion_4.1.pdf - MA1310 Module 4 Complex Numbers and...

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MA1310: Module 4 Complex Numbers and Polar Coordinates Discussion 4.1 Experience of Solving Complex Number and Polar Coordinate Problems 1 The purpose of this assessment is to help you determine whether you have a clear understanding of complex numbers and polar coordinates and provide you feedback to clarify any misunderstandings. Solve the given five problems based on complex numbers and polar coordinates. 1. Match the point 4 2 , in polar coordinates with A , B , C , or D on the graph. 2. Find the rectangular coordinates of the polar point 5 5 2 , . 3. Find the polar coordinates of the rectangular point ( 4, 4). 4. Find the absolute value of the complex number z = 2 + 5 i . 5. Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form. 5 1 cos sin 4 10 10 i Based on your experience of solving the problems, discuss: How confident you feel in yourself to solve similar problems on a scale of 5?
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