Complex numbers, represented in Cartesian coordinates, can also be visualized as vectors. These vectors can be expressed in polar form, emphasizing their magnitude and angle. When a complex number is input into a function, the output is another complex number, highlighting the function's zero point from which the vector representation can originate.
Consider a function defined as the product of the complex factors in the numerator divided by the product of the complex factors in the denominator. Each complex factor, viewed as a vector, allows the function's magnitude at any point to be computed as the product of the magnitudes of the vectors from the zeros, divided by the product of the magnitudes of the vectors from the poles.
The angle of the function at any point is determined by the sum of the angles of the vectors from the zeros minus the sum of the angles of the vectors from the poles. These angles are measured from the positive real axis to the vectors drawn from the function's zeros or poles to the point of interest.
To solve a complex function at a specific point, vectors are drawn from each zero and pole of the function to the chosen point. The magnitudes and angles of these vectors are then used to determine the function's value at that point. The magnitude of the function is the product of the lengths of the vectors from the zeros divided by the product of the lengths of the vectors from the poles. The angle of the function is found by subtracting the sum of the angles from the poles from the sum of the angles from the zeros.
By substituting these vector equations into the function, one can obtain both the magnitude and angle of the function at the specified point. This approach allows for a comprehensive analysis of complex functions, providing insights into their behavior and properties through the use of vector representation in polar form.
