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import numpy as np
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import math
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def x1_3(problemIndex): # 程序给出任一函数y=f(x)计算x=-500到+500的y值赋值给xyMap
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c = 0 # 此处x赋值为-500到-1到，1到500到1000个
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shape = [1000, 2] # y赋值为其对应的函数
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xyMap = np.random.rand(1000, 2)
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if problemIndex == 1:
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for x in range(-500, 500):
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if (x == 0):
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continue
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xyMap[c][0] = x
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xyMap[c][1] = math.sin(x)
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c += 1
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return xyMap
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elif problemIndex == 2:
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for x in range(-500, 500):
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if (x == 0):
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continue
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xyMap[c][0] = x
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xyMap[c][1] = math.cos(x)
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c += 1
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return xyMap
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elif problemIndex == 3:
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for x in range(-500, 500):
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if (x == 0):
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continue
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xyMap[c][0] = x
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xyMap[c][1] = math.tan(x)
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c += 1
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return xyMap
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elif problemIndex == 4:
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for x in range(-500, 501):
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if (x == 0):
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continue
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xyMap[c][0] = x
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xyMap[c][1] = x * 2 + 2
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c += 1
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return xyMap
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if __name__ == '__main__':
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print(x1_3(1))
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