Grade 11Algebra
Find the sum to n terms of the series :1.2.4+2.3.7+3.4.10+...
Find the sum to n terms of the series :1.2.4+2.3.7+3.4.10+...
1 Answer
Arun
Dear student
We can write general term as
Tr = r (r+1)(1 +3r)
Hence
Tr = r³ + 4r² + r
Now you can do yourself
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