Surya Ramachandran Asked a Question
December 29, 2020 12:03 pmpts 30 pts
I couldn't understand this identity & how it was arrived at. I assume mu & r are vectors. Please correct me if I am wrong.
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  • Lekhika thankyou
    see the attachment.
    • cropped4361161680582162500.jpg
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    Surya Ramachandran
    Thank you