(A)
(B)
(C)
(D)
(E) None of the above
which is of the form
.
We know that
.
Therefore,
Hence, the answer is (C).
Remember that there are two other identities which are also very important:
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(A)
(B)
(C)
(D)
(E) None of the above
which is of the form
.
We know that
.
Therefore,
Hence, the answer is (C).
Remember that there are two other identities which are also very important:
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