If `tan^-1y=4tan^-1x` then find the algebraic relation between x and y

If tan ^(-1) y= 4 tan ^(-1) x , find the algebric relation between x and y

If tan^(-1)x,tan^(-1)y and tan^(-1)z are in A.P. then find the algebraic relation between x,y and z. If x,y,z are also in A.P.then show that x=y=z and y!=0

If tan^(-1)x , tan^(-1)y and tan^(-1)z are in A.P, find the algebric relation between x,y and z. If x,y,z be also in A.P. then show that x = y = z(y ne 0) .

If tan^-1 y=4 tan^-1x, then y is infinite if

If tan^(-1)y=4tan^(-1)x, theny is infinite if

If tan^(-1)y=4tan^(-1)x , then 1//y is zero for

If tan^-1 y = 4 tan^-1 x , then y is infinite , if

If tan^-1y=5tan^-1, x express as an algebraic function of x and hence show that tan 18^0 is a root of the equation 5u^4 -10u^2 +1=0