Please Show Full Working Out. Please provide answers neatly on paper. Would be m

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Please Show Full Working Out. Please provide answers neatly on paper. Would be much appreciated.

Find the directional derivative of the function z = ln [ / exp (sin2y)] at the point (pi/4, 3pi/4) in the direction of the vector v = -i + j. Hint: Use log rules to simplify the function first. In which direction does this function increase most rapidly at the given point (pi/4, 3pi/4)? Give a reason and find the angle between this direction and the x-axis (present your answer in degrees up to two decimal places).

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