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 three positive numbers a,b,c are in A.P ad tan^(-1)a,tan^(-1)b,tan^(-1)c are also in A.P such that b lt 1 and ac lt 1 then

If three positive numbers a,b,c are in A.P ad tan^(-1)a,tan^(-1)b,tan^(-1)c are also in A.P such that b lt 1 and ac lt 1 then

If distinct positive number a , b, c, are in G.P. and (1)/(a-b), (1)/(c-a),(1)/(b-c) are in A.P. , then value of a + ab + c is equal to

If a,b,c are in G.P., show that 1/(a+b),1/(2b),1/(b+c) are in A.P.

If 1/a,1/b,1/c are in A.P. then (b+c)/a,(c+a)/b,(a+b)/c are also in A.P.

For distinct positive numbers a,b and c, if a^2,b^2,c^2 are in A.P. Then which of the following triplets is also in A.P.

Three positive numbers a, b, c are in A.P. Prove that (1)/(sqrt(b)+sqrt(c )), (1)/(sqrt(c )+sqrt(a)) , (1)/(sqrt(a) + sqrt(b)) are also in A.P.

If 1/(a+b),1/(b+c),1/(c+a) are in A.P., then c^2,a^2,b^2 are in A.P.