Question: quick answer 4. Let f(x, y) = In(2x + y). (a) Write the equation of the tangent plane to the graph of f(r, y) at

quick answer

4. Let f(x, y) = In(2x + y). (a) Write the equation of the tangent plane to the graph of f(r, y) at (-1, 3). (b) Use part (a) to estimate f(-1.1, 2.9)

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