Please Solve Neatly

Question 6 It is OK, but not required, to use graphing software for this question. Hand-drawn sketches are acceptable provided they reasonably represent the correct shape. COS X Given the function f(x, y) = V a -- 2 points) Write the equation for the level curves of f, and sketch level curves for f= 1, 2 and 3. Be sure to label the curves. b -- 1 point) Determine whether the value of the contour through (x, y) = (n/6, 1) is greater, equal or less than the contour through (1/4, 3)