Let `a ,b >0,` let `5a-b ,2a+b ,a+2b` be in A.P. and `(b+1)^2, a b+1,(a-1)^2` are in G.P., then the value of `(a^(-1)+b^(-1))` is _______.

If 5a-b, 2a+b, a+2b are in A.P. and (a-1)^(2), (ab+1),(b+1)^(2) are in G.P., a ne 0 , then a is equal to

Suppose a,b,c are in A.P and a^2,b^2,c^2 are in G.P If a

If a^(-1),b^(-1),c^(-1),d^(-1) are in A.P then find the value of (a^(-2)-d^(-2))(b^(-2)-c^(-2))^(-1)

If a,A_(1),A_(2),b are in A.P., a,G_(1),G_(2),b are in G.P. and a, H_(1),H_(2),b are in H.P., then the value of G_(1)G_(2)(H_(1)+H_(2))-H_(1)H_(2)(A_(1)+A_(2)) is

If 1/a,1/b,1/c are in A.P and a,b -2c, are in G.P where a,b,c are non-zero 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

1/16 , a and b are in G.P , 1/a,1/b and 6 are in A.P then find 72(a+b)

If A=[[1,7],[2,5]] B=[[p,q],[a,b]] and A=B. then the value of a is

Let a,x,b be in A.P , a,y,b be in G.P and a,z,b be in H.P . If x=y+2 and a=5z , then