If x,y, and z are positive real numbers different from 1 and `x^18=y^21=z^28` show that `3,3 log_y x, 3log_zy, 7log_xz` are in A.P.

If x^(18)=y^(21)=z^(28) then 3, 3log_y x, 3log_z y, 7log_x z are in

If x^(18)=y^(21)=z^(28) , then 3,3 log_(y)x,3log_(z)y,7log_(x)z are in

If log x, log y and log z are in AP, then

If x is a positive real number different from 1 such that log_(a)x,log_(b)x,log_(c)x are in A.P then

If x,y,z are three positive numbers forming a geometric sequence, then show that log_(a)x,log_(a)y,log_(a)z form an arithmetic sequence ;a being positive and not equal to 1.

If x,y,z are in G.P. then log x , log y, logz, are in