Question 1

Find the tangent plane to the equation z = - 2x + 5y - y at the point ( - 1, - 3, 46). Z =Find the equations of the normal line to the surface 2: = 5$4y3 at the point ( 2, 1, 80). Use the tangent plane to approximate a function of two variables at a point. Use a tangent plane to approximate the value of the following function at the point ( 2.9, 1.9). Give your answer accurate to 4 decimal places. f(% y) = V22 m2 y2