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The directional derivative of the function f (x, y) = x2 + y2 along a line directed from (0,0) to (1,1), evaluated at the point x = 1, y = 1 is

September 1, 2023
The directional derivative of the function f (x, y) = x2 + y2 along a line directed from (0,0) to (1,1), evaluated at the point x = 1, y = 1 is
Q.The directional derivative of the function f (x, y) = x2 + y2 along a line directed from (0,0) to (1,1), evaluated at the point x = 1, y = 1 is
   (A) √2(B) 2  (C) 2√2  (D) 4√2

Ans: 2√2

Sol:

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