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Let f : R2 —> R be defined by

Then, the directional derivative direction of f at (0 , 0) in the direction o f the vector is
  • a)
    1/√2
  • b)
    1/2
  • c)
    1/2√2
  • d)
    1/4√2
Correct answer is option 'A'. Can you explain this answer?
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Let f: R2 —> R be defined byThen, the directional derivative ...
we are given that u = and a = (0,0). we have directional derivative at a in the direction u as 

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Let f: R2 —> R be defined byThen, the directional derivative ...
we are given that u = and a = (0,0). we have directional derivative at a in the direction u as 

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Let f: R2 —> R be defined byThen, the directional derivative ...
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Let f: R2 —> R be defined byThen, the directional derivative direction off at (0 , 0) in thedirection o f the vectorisa)1/√2b)1/2c)1/2√2d)1/4√2Correct answer is option 'A'. Can you explain this answer?
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