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princessakosua2
26.11.2019 •
Mathematics
By recognizing the series below as a taylor series evaluated at a particular value of x, find the exact sum of the convergent series. 1 + 3/1! + 9/2! + 27/3! + 81/4! + + 3n/n! +
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Ответ:
Step-by-step explanation:
Given is a series as
Recall the expansion of
This expansion is valid for all real values of x.
Comparing this with our series we find that x =3
Hence the given series =![e^3](/tpl/images/0391/2882/4c2fb.png)
Thus we find that the given series can be recognized with the expansion of exponential series with powers of e and here we see that power of e is 3.
So the given Taylor series is equivalent to
Ответ:
-11/16
Step-by-step explanation:
1 1/8 + b≥ 7/16
-18/16 -18/16
b≥-11/16