Question

Find the sum to n terms of each of the following series.
« 12– 22 + 32 – 42 + 52 - 62 + ...
(11) -+- +*+...
​

Answer 1

Answer:

Step-by-step explanation:split this  sum of two series and solveas shown below,

(12+ 32+52---------N/2 terms) - (22+42+62 ,,,,,,,N/2 terms)