Numpy ndarray.dot() function | Python
Last Updated :
22 Apr, 2020
numpy.ndarray.dot()
function return the dot product of two arrays.
Syntax : numpy.ndarray.dot(arr, out=None)
Parameters :
arr : [array_like] Input array.
out : [ndarray, optional] Output argument.
Return : [ndarray] The dot product of two arrays.
Code #1 :
import numpy as geek
arr1 = geek.eye( 3 )
arr = geek.ones(( 3 , 3 )) * 3
gfg = arr1.dot( arr )
print ( gfg)
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Output :
[[ 3. 3. 3.]
[ 3. 3. 3.]
[ 3. 3. 3.]]
Code #2 :
import numpy as geek
arr1 = geek.eye( 3 )
arr = geek.ones(( 3 , 3 )) * 3
gfg = arr1.dot(arr).dot(arr)
print ( gfg)
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Output :
[[ 27. 27. 27.]
[ 27. 27. 27.]
[ 27. 27. 27.]]
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