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- Q/IF it was AY ₁2) = -12 ℗ Y³ (2) = -12 ⒸY³ (2) = -11 Y³ (2) = -11 DÝ (2) = -13 © ²³ (2) = -13 = X+1 X-1 Y = Not of the above so y" (2)of (7, - 2) if f(x,y) = 4x + 7xy - 3y + 6x- 5y – 2. Find of -(7, – 2) = (Simplify your answer.)If f(x, y) = x²y (5x- y2) L (a) f(1,4) (b) f(-5, -1) (c) f(x+h, y) (d) f(x,x) find the following.
- 2,4 Let f (x, y) : if (x, y) # (0,0) and f (0,0) = 0. (x4+6y8)Find the value of fa and fy at (1, -1) when 4 f(x,y) +5x² + 3y². xy 0 1. - -1 = 9, f = -7 2. f= = - 6, fa-1) (1,-1) 3. f²|(1,-1) 4. fa - = 2 = 14, f-1 = = -10 = - 6, fan = = -10 5. = 2 f= - = 14, f-1) =Suppose f(x₁y,₁z) = xyz + 2xy + 2² · Compute the following values -(2,8,16) - (-2,-8, 16) (1,-1,0) • (a, b, c) • (ab, b-c₁, c²)
