Question

Find the sum of the given series up to “n” terms

1x4+3x6+5x8+7x10+…………….

Correct answer will be marked as brainliest

Answer 1

Answer:

1/(1∗4)+1/(4∗7)+1/(7∗10)+....

(1/3)∗(3/(1∗4)+3/(4∗7)+3/(7∗10)+....

(1/3)∗(1−1/4+1/4−1/7+1/7−1/10+....−1/infi

Cancelling - and + terms and terming 1/infi to zero

(1/3)∗(1−0)

1/3

Hence 1/3 is the answer

Step-by-step explanation:

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Answer 2

Answer:

1×4+3×6+5×8+7×10+9×12