CBSE XI Science Maths Sequences and Series
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
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
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