যদি তিনটি ধনাত্মক সংখ্যা a, b, c AP তে থাকে এবং 1/a^2,1/b^2,1/c^2ও AP-তে থাকে তাহলে | 12 | SEQU...

If a,b,c are in AP and a^(2),b^(2),c^(2) are in HP, then

If a, b, c are in GP, prove that 1/((a+b)), 1/(2b), 1/(b+c) are in AP.

If l n(a+c),l n(a-c)a n dl n(a-2b+c) are in A.P., then (a) a ,b ,c are in A.P. (b) a^2,b^2, c^2, are in A.P. (c) a ,b ,c are in G.P. d. (d) a ,b ,c are in H.P.

If three positive numbers a,b,c are in A.P.and (1)/(a^(2)),(1)/(b^(2)),(1)/(c^(2)) also in A.P. then

If a,b,c are in AP, then (a)/(bc),(1)/(c ), (1)/(b) are in

If a, b, c are in A.P., prove that a^(2)(b+c),b^(2)(c+a),c^(2)(a+b)" are also in A.P."

if a,b,c are in AP, prove that (a-c)^(2) = 4( b^(2) -ac)