If $y = {1 \over {a - z}},$then ${{dz} \over {dy}} = $

  • A
    ${(z - a)^2}$
  • B
    $ - {(z - a)^2}$
  • C
    ${(z + a)^2}$
  • D
    $ - {(z + a)^2}$

Similar Questions

${d \over {dx}}\log (\log x)$=

The equation of a curve is given as $y=x^2+2-3 x$. The curve intersects the $x$-axis at

If $log_{10} (xy) = 2$, then the value of $xy$ is

The side of a square is increasing at the rate of $0.2\,cm / s$. The rate of increase of perimeter w.r.t. time is $...........\,cm / s$

If $\tan \theta=\frac{1}{\sqrt{5}}$ and $\theta$ lies in the first quadrant, the value of $\cos \theta$ is :