Question

write an experssion for unit vector along reflected ray (r^) if unit vectors î and n^ represents unit vectors along incident ray and normal (at point of reflection and outward from surface) respectively and angle between incident ray and a normal is /theta.

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Answer 1

Answer:

In the below diagram, the OR gate display that the order of the input variables does not matter at all. For two variables, the commutative law of addition is written as: A+B = B+A. For two variables, the commutative law of multiplication is written as: A.B = B.A.