Question: Last second number 7 Replace B in this question with the second to last digit of your student number. Consider the function f(x, y) -

Last second number 7

Replace B in this question with the second to last digit of your student number. Consider the function f(x, y) - x7 + xy (a) Suppose that x - (B + 2)s - 12 and y = S + 2t. Use the chain rule for a function of several variables to calculate of as and of at (b) Find the equation of the tangent plane to the surface z = f(x, y) at the point with co-ordinates (2, -1, 2)

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