CBSE Class 11-science Answered
Let a1 , a2, ……., a100 be non zero real number such that
a1 + a2 + …… + a100 = 0 then
a. ∑100i=1 at 2ai > 0 and ∑100i=1 ai 2-ai <0
b. ∑100i=1 at 2ai >= 0 and ∑100i=1 ai 2-ai >=0
c. ∑100i=1 at 2ai <= 0 and ∑100i=1 ai 2-ai <=0
d. the sign of ∑100i=1 at 2ai or ∑100i=1 at 2ai depends on the choice of ai’s
Asked by Anil | 22 Aug, 2017, 08:29: PM
Expert Answer
Option d is correct.
If we take 4 numbers such as -1,1,-1,1
their sum is 0 and given summation is 0
But if we take 1,1,-1,-1
then also their sum is 0 but given summation is > 0
Answered by Sneha shidid | 06 Dec, 2017, 11:11: AM
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