>>> import cmath >>> algebraic = 3 + 2j >>> geometric = complex(3, 2) >>> radius, angle = cmath.polar(algebraic) >>> trigonometric = radius * (cmath.cos(angle) + 1j*cmath.sin(angle)) >>> exponential = radius * cmath.exp(1j*angle) >>> for number in algebraic, geometri...
Python complex numbers consist of two parts such as real and imaginary numbers, it also allows us to access these separately. This is useful when you want to extract a specific part of a complex number. z = 3 + 4j print(z.real) print(z.imag) Output: 3.0 4.0 You can see the output...
importcmath real_part=5imaginary_part=3complex_number=complex(real_part,imaginary_part)amplitude=abs(complex_number)phase_angle=cmath.phase(complex_number)conjugate=cmath.conj(complex_number)print("复数:",complex_number)print("幅度:",amplitude)print("相位角:",phase_angle)print("共轭复数:",conju...
import math def move(x, y, step, angle): nx = x + step * math.cos(angle) ny = y - step * math.sin(angle) return nx, ny x, y = move(100, 100, 60, math.pi / 6) print x, y #151.961524227 70.0 r = move(100, 100, 60...
NumPy 不仅支持复数的计算,还有专门处理复数相关的函数,比如复数的绝对值和相位角等。可以使用numpy.abs()和numpy.angle()进行相关计算。例如: # 计算复数的绝对值和相位角abs_value=np.abs(root)angle_value=np.angle(root)print(f"The absolute value of{root}is:{abs_value}")print(f"The angle (in rad...
circle(rad, angle, 2) turtle.fd(rad) turtle.circle(neckrad + 1, 180) turtle.fd(rad * 2 / 3) def main(): turtle.setup(1300, 800, 0, 0) pythonsize = 30 turtle.pensize(pythonsize) turtle.pencolor("blue") turtle.seth(-40) draw_snake(40, 80, 5, pythonsize / 2) main() ...
内置的complex类型可以用来表示二维向量,但我们的类可以扩展为表示n维向量。我们将在第十七章中实现这一点。 图1-1. 二维向量加法示例;Vector(2, 4) + Vector(2, 1) 的结果是 Vector(4, 5)。 我们将通过编写一个模拟控制台会话来开始设计这个类的 API,稍后我们可以将其用作文档测试。下面的代码片段测试了...
>>> lat = lon := 0 SyntaxError: invalid syntax >>> angle(phi = lat := 59.9) SyntaxError: invalid syntax >>> def distance(phi = lat := 0, lam = lon := 0): SyntaxError: invalid syntax In all these cases, you’re better served using = instead. The next examples are similar ...
radians(angle) print(f"radians({angle}) = {result}") c. `cos(x)`:返回x的余弦值 import math # 计算π/2的余弦值 x = math.pi / 2 result = math.cos(x) print(f"cos({x}) = {result}") # 计算π的余弦值 x = math.pi result = math.cos(x) print(f"cos({x}) = {result}"...
labels = [0, 90, 45] plt.figure(2, figsize=(12, 4)) plt.suptitle("Haar Bands") for slice_idx in range(len(wavelets_haar)): plt.subplot(1, 3, slice_idx + 1) plt.axis('off') plt.title(f"Angle {labels[slice_idx]}") plt.imshow(10 * (np.abs(wavelets_haar[slice_idx]))...