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import numpy as np
def x1_2 ( problemIndex ) : # 程序给出任一函数 y=f(x)计算x=1到1000的y值，
# shape = [1000,2] #x值为1到1000，
xyMap = np . random . rand ( 1000 , 2 )
if problemIndex == 1 :
for x in range ( 1 , 1001 ) :
xyMap [ x - 1 ] [ 0 ] = x # xyMap序号为0-999
xyMap [ x - 1 ] [ 1 ] = np . sin ( x )
return xyMap
elif problemIndex == 2 :
for x in range ( 1 , 1001 ) :
xyMap [ x - 1 ] [ 0 ] = x
xyMap [ x - 1 ] [ 1 ] = np . cos ( x )
return xyMap
elif problemIndex == 3 :
for x in range ( 1 , 1001 ) :
xyMap [ x - 1 ] [ 0 ] = x
xyMap [ x - 1 ] [ 1 ] = np . tan ( x )
return xyMap
elif problemIndex == 4 :
for x in range ( 1 , 1001 ) :
xyMap [ x - 1 ] [ 0 ] = x
xyMap [ x - 1 ] [ 1 ] = x * 2 + 2
return xyMap
if __name__ == ' __main__ ' :
print ( x1_2 ( 4 ) [ : 50 ] )
