Find the directions in the tog-plane in which the function flit-:3} = E 4x2 1.r2 has zero change at the point P[ 'i: 13]. Express the directions in terms of unit vectors. What is the unit vector in a direction of zero change Iwith a positive x-component'? {DD [Type exact answers. using radicals as needed.) 2 x Consider the function fir-Ly} = 3 E v2: whose graph is a para holoid {see figure]. a. Find the value of the directional den'vative at the point [Bill] in the direction b. Sketch the level curve through the given point and indicate the direction of the directional derivative from part (a). <: a. the directional derivative is i. an exact answer: using radicals as needed>