Question

+ Zn+(-11n an= -geo - DET -tete - LCT? -Ath AST -int - ratio -p root 4nt3 LCT: lim no

Answer 1

2n +(-1) an 40 +3 lim no an = lim no 2n +6.00 47 63 lin 2 t (1) n no 4 3 = 2+O 4 to to 2 Theorem: If E un be convergent, then lim uno n → Since here hence lim an to nyoo {an is not convergent.

NOTE : we perform LCT ( limit comparison test ) for series of positive real numbers . But here your series is alternating series .....so LCT not applicable .

I think it will help you . If you have any doubt feel free to ask in the comments section .