Worked Example 1
Worked Example 1
TGM Original Questions
Free
Find \(\sum\limits_{r=3}^{n}{(3nr+n+{{3}^{r}})}\).
Video Solution:
Default solution
Answer:n(n-2)(3n+11)/2 + (27/2)(3^{n-2} - 1)
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Learn moreFind \(\sum\limits_{r=3}^{n}{(3nr+n+{{3}^{r}})}\).
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