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According to the commutative of multiplication, a*b = b*a.
I'm not sure what you mean by the definition but here is the formula: Area = ½ × b × h
By definition (-1)*(-1)=1.(-a)*(-b)(-1)*(a)*(-1)*(b)(-1)*(-1)*(a)*(b)(a)*(b) ■
two sets A and B are said to be equivalent if there exists a bijective mapping between A and B
It is a real number that cannot be expressed as a ratio of two integers, a/b (where b>0).