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