Fal12017 14 Partial Derivatives: Problem 12 Previous Problem Problem ListNext Problem (1 point) Suppose z z2 siny, zã¼-282-4t2, y 6st A Use the chain rule to findìºand as functions of X, y sand t 0z ot B. Find the numerical values of ìº and ìº when (s, t) = (4,3) (4,3) 4, 3) =