Question: Shifting summation indices is often convenient or necessary in the power series method. Shift the index so that the power under the summation sign is
Shifting summation indices is often convenient or necessary in the power series method. Shift the index so that the power under the summation sign is Xm. Check by writing the first few terms explicity.

s(s+ 1) 2 s + 1 8-2 -x-1, -XP+4 P-1(P + 1)!
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For the first summation we can shift the index s by adding 2 to it This gives s2 ss... View full answer
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