az Find 2) Let z = f(x,y) = 4x2 - 19xy + 2y3. A) -19x - 6y C) 8x - 19y B) 8x + 19y2 D) - 19x + 6y2 Find fx- 3) f(x, y) = y In (8x + 4y) 8 A) fx(x, y) In (8x + 4y) + 8x + 4y 8y B) fx(X, y) = 8x + 4y C) fx(x, y) y In (8x + 4y) 8xy 8x + 4y D) fx(x, y) =

Q: then fxy Q4: If f (x, y,z) = x²y³ – y²z3 %3D -

A: we have to find partial derivative

Q: Suppose that f(æ, y) = e" = e-3z? - 4y? +y

A:

Q: Use Cramer's rule (by hand) to find the unique solution of x1 +3x3 = -1 -3x1 +2x3 = 1 2x2-x3=0

A:

Q: 2) -3x + y = 23 A) (4,1) C) (-8, -1) B) (-4,-1) D) (1,4)

A:

Q: 2. Prove that if a, b e R, then (a) -(a + b) = (-a) +(-b), (c) 1/(-a) = –(1/a), (b) (-a)·(-b) = a ·…

A:

Q: for the discrimanat here dont we do (Uxy)^2-(Uxx*Uyy)

A: Please see the below picture for detailed solution.

Q: Section 1: K/U Multiple Choice: [3 Marks] 1. Derivative of y = 14 is: a) 0 b) 1 2. Derivative of…

A:

Q: 9. If 4x(y+2) ソー3 O J6 4x(y+2) – 2x, y # 3 or -2, and x #0,2= ソ-3 y+2 A) B) C) 2 1/8112 28

A:

Q: Find those constants a, b, c, d such that f(z) = ax² + bxy + y² + i(x² + cxy + dy?)

A: The given function is : fz=ax2+bxy+y2+i(x2+cxy+dy2)