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Grade: 12

                        

DOUBT OF SEQUENCE AND SERIES.... a n =2 n -5/2 ;FIND : t 8, t 12

4 years ago

Answers : (3)

Muskaan
8 Points
							An and tn means the same thing T8 = 2^8-5/2=507/2,T12= 2^12 - 5/2= 16379/2Therefore , answer is 507/2, 16379/2
						
4 years ago
VIKRAM ENIMIREDDY
53 Points
							an=2^n -5/2
a8=2^8-5/2
   =(2^9-5)/2
   =(512-5)/2

1. a8 =507/2
a12=2^12-5/2
    =(2^13-5)/2
   =(8192-5)/2     

2. a12=8187/2
now i think you can satisfied with this format.
4 years ago
Shubham Pitroda
41 Points
							No...VIKRAM ENIMIREDDY.....tn and an is different form....tn is nth term and by an we can find the first term and second term.......Solution:first put 1 and 2 in an simultaneously where a1 is first term and a2 is second term... By this we can find the , difference also.....by this we can find t8 and t12 also.......This is the perfect solution........
						
4 years ago
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