Question: Consider the first-order model yt = 75 + 10x1 + 6x2 (a) Sketch the contours of constant predicted response over the range 1 xi

Consider the first-order model yt = 75 + 10x1 + 6x2
(a) Sketch the contours of constant predicted response over the range –1 ≤ xi ≤ + 1, i = 1, 2.
(b) Find the direction of steepest ascent.

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