Write-the-first-five-series-indicating-the-5th-term-5th-partial-sum-n-1-t-n-where-t-n-1-for-n-1-1-2-for-n-2-

Question Number 27685 by NECx last updated on 13/Jan/18

W r i t e t h e f i r s t f i v e s e r i e s i n d i c a t i n g

t h e 5 t h t e r m, 5 t h p a r t i a l s u m

\underset{n = 1}{\sum^{\infty}} t_{n}, w h e r e

t_{n} = {\begin{cases} 1 f o r n = 1 \\ \frac{1}{2} f o r n = 2 \\ 1 - \frac{1}{2} + \dots + {(- 1)}^{n + 1} (\frac{1}{n}) f o r n > 2 \end{cases}

Commented by NECx last updated on 12/Jan/18

T h e t h r e e t_{n} a r e m e a n t t o b e j o i n e d

b u t I d o n t k n o w h o w t o w r i t e i t

w i t h t h e a p p e d i t o r .

Commented by prakash jain last updated on 12/Jan/18

You can rows or columns . press line and

matrix option on the left side .