" (ii) "a(1)-a(3)+a(5)+...=2^((9)/(2))si...

" (ii) "a_(1)-a_(3)+a_(5)+...=2^((9)/(2))sin(r pi)/(4)

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If a_(1), a_(2),………, a_(50) are in G.P, then (a_(1) - a_(3) + a_(5) - ....... + a_(49))/(a_(2) - a_(4) + a_(6) - ....... + a_(50)) =

Find the respective terms for the following lowing Aps. (iii) a_(1) = 5, a_(4) = 9(1)/(2) , find a_(2), a_(3) .

If a_(1), a_(2), …, a_(50) are in GP, then " "(a_(1)-a_(3)+a_(5)-…+a_(49))/(a_(2)-a_(4)+a_(6)-…+a_(50)) is equal to :

If a_(1),a_(2),...,.,a_(10) are positive numbers in arithmetic progression such that (1)/(a_(1)a_(2))+(1)/(a_(2)a_(3))+...*+(1)/(a_(9)a_(10))=(9)/(64) and (1)/(a_(1)a_(10))+(1)/(a_(2)a_(9))+......(1)/(a_(10)a_(1))=(1)/(10)((1)/(a_(1))+...+(1)/(a_(10))) then the value of (2)/(5)((a_(1))/(a_(10))+(a_(10))/(a_(1))) is

If ( a_(2)a_(3))/( a_(1) a_(4)) = ( a_(2) + a_(3))/( a_(1) + a_(4) ) = 3 ((a_(2) - a_(3))/(a_(1) - a_(4))) , then : a_(1) , a_(2) , a_(3) , a_(4) are in :

If a_(1),a_(2),a_(3)"....." are in GP with first term a and common ratio r, then (a_(1)a_(2))/(a_(1)^(2)-a_(2)^(2))+(a_(2)a_(3))/(a_(2)^(2)-a_(3)^(2))+(a_(3)a_(4))/(a_(3)^(2)-a_(4)^(2))+"....."+(a_(n-1)a_(n))/(a_(n-1)^(2)-a_(n)^(2)) is equal to

If a_(1),a_(2),a_(3)"....." are in GP with first term a and common rario r, then (a_(1)a_(2))/(a_(1)^(2)-a_(2)^(2))+(a_(2)a_(3))/(a_(2)^(2)-a_(3)^(2))+(a_(3)a_(4))/(a_(3)^(2)-a_(4)^(2))+"....."+(a_(n-1)a_(n))/(a_(n-1)^(2)-a_(n)^(2)) is equal to

" (ii) "a_(1)-a_(3)+a_(5)+...=2^((9)/(2))sin(r pi)/(4)

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