Question

Show that the tangent at P(x₁, y₁) on the curve $\sqrt{x} + \sqrt{y} = \sqrt{a}$ is $yy_{1}^{\frac{-1}{2}} + xx_{1}^{\frac{-1}{2}} = a^{\frac{1}{2}}$.

Answer 1

Don’t know sOooooooooooooooory