Найдите производную [latex] y= \sqrt{9-x^2} [/latex]

[latex]y'= \frac{-2x}{ 2\sqrt{9-x^2} } =-\frac{x}{ \sqrt{9-x^2} }[/latex]

y`=-2x/2√(9-x²)=-x/√(9-x²)