#!/usr/bin/env python

#-*- coding:utf-8 -*-

# FileName: sali.py

#

# Description:

#

# Version: 1.0

# Created: 2018-07-03 10:37:11

# Last Modified: 2018-07-03 10:37:16

# Revision: none

# Compiler: gcc

#

# Author: zt ()

# Organization:

import numpy as np

from matplotlib.pyplot import plot

from matplotlib.pyplot import show

import sys

# (1) 使用linspace函数初始化变量t，即从-pi到pi上均匀分布的201个点

a = float(9)

b = float(8)

t = np.linspace(-np.pi, np.pi, 201)

# (2) 使用sin函数和NumPy常量pi计算变量x

x = np.sin(a * t + np.pi / 2)

# (3) 使用sin函数计算变量y

y = np.sin(b * t)

plot(x, y)

show()