Multiplication

Author

Eric W. Weisstein
April 14, 2004

This notebook downloaded from http://mathworld.wolfram.com/notebooks/Algebra/Multiplication.nb.

For more information, see Eric's MathWorld entry http://mathworld.wolfram.com/Multiplication.html.

©2005 Wolfram Research, Inc. except for portions noted otherwise

Multiplication of numbers x and y carried out in base b

Multiply[{x_,y_},b_]:=FromDigits[ListConvolve[IntegerDigits[x,b],IntegerDigits[y,b],{1,-1},0],b]

Multiply[{7,12},10]

Multiply[{7,12},2]