Which of the following identities is not valid? (a) a(b + c) = ab + bc (b)
Question:
Which of the following identities is not valid?
(a) a(b + c) = ab + bc
(b) a × (b + c) = a × b + a × c
(c) a ∙ b = b ∙ a
(d) c ∙ (a × b) = –b ∙ (a × c)
(e) aA ∙ aB = cos θAB
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e aA aB cos AB is not valid a ab c ab bc is a valid identity because it is the distributive property ...View the full answer
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