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November 25, 2021 8:04 pm 30 pts
y 0 44 Let f: R2> R be defined by f(x, y) = y = 0 nere If the directional derivative of f at (0, 0) exists along the direction cos o i +sin a j, where sin a 0, then the value of cot a is .
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• Kanika goswami 1 Best Answer
check attachment.