5 comments on “Reply to Fope & Anih

  1. Anih John says:

    This was helpful. Thank you for your time sir.

  2. Samah Rukayat says:

    Hello sir, the example on page 54 of the class note isn’t clear. I don’t understand why delta ki,kj and 3 are d ones outside the matrix.Regards.

    • oafak says:

      Rukayat, go ahead and carry out the determinant expansion by yourself and tell what you will have. All you then need to observe is that when the indices of the Kronecker delta are the same unknown indices, the value becomes 3 as shown in example 12.

  3. Jide says:

    nice, that was also helpful. the comma also got me confused.

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