Find of, of and az дх ду HINT [See Example 3.] 24 f(x, у, 2) x2 + y2 + z2 af ax af %3D ду af Find their values at (0, -1, 1) if possible. (If an answer is undefined, enter UNDEFINED.) Of (0, -1, 1) = ax Of (0, -1, 1) = ду af Но, -1, 1) %3 az

Find all points where fox)=21x-131 fails be to be differentialde

Problem YOUDEN RECTANGLE'S PROBLEM BIBD- Balanced Incomplete Block Design . There is a matrix m x n. This matrix can be 26 x 4 but we can change this dimension if 26 x 4 does not admit a feasible solution. • m> n + 1 • The rows are called "blocks" and the columns are called "forms" • Every form is composed by the same number of blocks • • Every block is composed by the same number of forms The matrix is full and every single spot should be filled with a treatment Every treatment is is replicated r times in the Youden rectangle • Every treatment appears in every form maximum one time • Every couple of treatment appear together in every form 1 times Every treatment appear in all single blocks the same number of times v = number of treatments (1,2,3,4,.....,n) n = blocks (columns) m = forms (rows) r = number of times every treatment is replicated λ = number of times two treatment appear together in the same form Constraints: 1) nxm=vxr - 2) 1 (v 1) = r (k-1) 3) m > v then r > n Goal The…

of of Let f(x,y) = 4x2 + 4xy-3y2 + 7x-7y-2. Find (2, ,-4) and (2,- 4). of (2,- 4) =(Simplify your answer.) of (2, - 4) =(Simplify your answer.) Enter your answer in each of the answer boxes.