Question: Assignment4: Problem 20 (1 point) Suppose that z is a linear function of a: and y with slope 2 in the a: direction and slope

Assignment4: Problem 20 (1 point) Suppose that z is a linear function of a: and y with slope 2 in the a: direction and slope 5 in the y direction. (a) A change of 0.1 in a: and 0.2 in :9 produces what change in z? - change In 2: = (b) If z = 8 when a: = 5 and y = 7, what is the value of zwhen $ = 4.8 and y = 6.7? 3: Note: You can earn partial credit on this problem. Preview My Answers Submit Answers Entered Answer Preview I Result I Message This answer is equivalent ([e"(-16/17)]/17)*|n(16*(4"4))*(X+4)+ (313? 4 3%(3, _ 4) [([e"(16/17)]*(y4))/4]+0.8113 17 1n(16 ' 4 )(m + 4) + T + 0.8113 to the one you just submitted. Find the equation of the tangent plane to the surface 2 = 643/17 1n (2y) at the point (4, 4, 0.8113). Z = eA(-16/17)/17*ln(16*4/\\4)*(x+4)+e'\\(16/17)*(y-4)/4+0.81 13 a Note: Your answer should be an expression of x and y; e.g. "5x + 2y - 3" Assignment4: Problem 17 (1 point) Find the partial derivatives of the function aC f(x, y) = cos(5t- + 8t - 3) dt y fx(x, y) = -cos(5x^2+8x-3)*(10x+8) fy(x, y) = cos(5y^2+8y-3)*(10y+8) EEE Note: You can earn partial credit on this

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