(Solved): Use the tangent plane to approximate a function of two variables at a point. Find the linear appro ...

Use the tangent plane to approximate a function of two variables at a point. Find the linear approximation to the equation \( f(x, y)=2 \sqrt{\frac{x y}{4}} \) at the point \( (8,2,4) \), and use it to approximate \( f(8.3,2.11) \) \[ f(8.3,2.11) \cong \] Make sure your answer is accurate to at least three decimal places, or give an exact answer. Question Help: \( \square \) Video \( \square \) Message instructor