Consider the following equations for two vectors a and b : 1. ( a + b ) ( a - b )=| a |^2-| b |^2 2. (| a + b...

Question

Consider the following equations for two vectors a and b : 1. ( a + b ) ( a - b )=| a |^2-| b |^2 2. (| a + b | ) (| a - b | )=| a |^2-| b |^2 3. | a b |^2+| a b |^2=| a |^2| b |^2 Which of the above statements are correct?

Accepted Answer

(C)

NDA 2019 Mathematics question

Solution

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