z=tanx then ` (d^(2)z)/(dx^(2))` is equal to

If y =f (x) and z=g(x) then (d^(2)y)/(dx ^(2)) equals

If argz=alpha and |z-1|=1 then |(z-2)/(z)| is equal to

If z is a non zero complex,number then |(|z|^(2))/(zz) is equal to |(z)/(z)| b.|z| c.|z| d.none of these

If z_(1)&z_(2) are two non-zero complex numbers such that |z_(1)+z_(2)|=|z_(1)|+|z_(2)|, then arg (z_(1))-arg(z_(2)) is equal to a.-pi b.-(pi)/(2)c*(pi)/(2) d.0

Let z_(1) and z_(2) be two given complex numbers such that z_(1)/z_(2) + z_(2)/z_(1)=1 and |z_(1)| =3 , " then " |z_(1)-z_(2)|^(2) is equal to

[d/(dx)(10^(x tanx))] is equal to

If x=int_(c^(2))^(tan t)tan^(-1)z dz, y= int_(n)^(sqrt(t))(cos(z^(2)))/(z)dx then (dy)/(dx) is equal to : (where c and n are constants) :

If x=e^(z) then x^(2)*(d^(2)y)/(dx^(2)) is