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Let * be binary operation on Q defined by $ a*b=\large\frac{3ab}{5} $ show that * is commutative as well as associative. Also find its identity element if it exists.
cbse
class12
modelpaper
2012
sec-b
q12
math
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asked
Feb 4, 2013
by
thanvigandhi_1
edited
Jul 26, 2013
by
sreemathi.v
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Let * be binary operation of N x N defined by (a,b)*(c,d)=(a+c,b+d). Show that * is commutative as well as associative. Find the identity element for the operation * on N x N, if any.
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