Math Problem Statement
Solution
Let's analyze the mathematical function shown in the image.
The function given is:
This is a complex number raised to the power . The term inside the parentheses has both a real part and an imaginary part . Let's explore what happens to the function’s graph as increases.
Detailed Explanation
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The Complex Base
The number inside the parentheses, , is in the form , where and . This corresponds to a point in the complex plane.-
Polar form:
The complex number’s magnitude (modulus) is:The argument (angle with the positive real axis) is:
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Effect of Raising to Power
In polar form, raising a complex number to the power results in:Since , the magnitude stays 1 for all . Thus, only the angle changes as increases. Specifically:
This means each time increases by 1, the point rotates by radians (or 30 degrees) counterclockwise on the unit circle.
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Graph Description
As shown in the provided images:- The blue points mark the position of on the unit circle for increasing values of .
- For , the point is at an angle .
- For , it moves to , and so on.
- As grows, the point continues to rotate around the circle in steps of 30 degrees.
Conclusion
The function traces points along the unit circle, rotating counterclockwise by for each increment of . The red arrow likely shows the direction of rotation, and the blue points mark the positions after each step.
Do you need any further details or explanations?
Here are five related questions to deepen your understanding:
- What is the difference between polar and Cartesian representations of complex numbers?
- How do you convert between polar form and rectangular form of a complex number?
- What happens if the magnitude were not 1 in this case?
- Can you generalize how rotations work for other angles in complex numbers?
- How does complex multiplication affect the magnitude and angle of the product?
Tip:
Always try expressing complex functions in polar form when dealing with powers, as it simplifies understanding rotations and magnitudes!
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Math Problem Analysis
Mathematical Concepts
Complex Numbers
Polar Coordinates
Powers of Complex Numbers
Formulas
Complex Number Magnitude |z| = sqrt(a^2 + b^2)
Complex Number Argument theta = tan^(-1)(b/a)
Raising Complex Number to Power: z^n = r^n * e^(in*theta)
Theorems
Euler's Formula: e^(ix) = cos(x) + i*sin(x)
Multiplication Theorem for Complex Numbers in Polar Form
Suitable Grade Level
Grades 11-12 or Introductory College Level