lab week 5 Flashcards
1
Q
construct a complex number in Python
A
num = complex(a, b) or num = a + bj
2
Q
how to get the angle of the complex number in degrees, not radians?
A
np.degrees(np.angle(complex_num))
3
Q
create the conjugate of pointB
A
np.conj(pointB)
4
Q
extract the real component from the complex number in Python
A
np.real( num )
5
Q
Euler’s formula
A
6
Q
magnitude vs Euler’s formula
A
7
Q
Fourier coefficient in general
A
the output of the Fourier transform
8
Q
Fourier coefficient vs Euler’s formula
A
abs(complex) = magnitude
angle(complex) = phase
Fourier components are complex numbers
9
Q
all cosines are in-phase - how would this look like? what does it mean?
A
they all start at 1. At some time point, they are all 1 again. This occurs at 1s.
