Loyal chakma Asked a Question
July 7, 2020 11:23 ampts 30 pts
Q.17 Let f: R2 > R be defined by )=* if x+y # 0 if x +y =0 Then the value of + (A) 0 at the point (0, 0) is \dx dy dy dx / (B) I (C) 2 (D) 4 4 2
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  • Arzoo Best Answer
    Attachment 1
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  • Vishal goswami thankyou
    see attachment
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    Loyal chakma
    we know fx(a,b)=f(a+h,b)/h-f(a,b)/h ...so why in the fourth line it wasn't substracted from f(h,0) as opposed to f(0,0(
  • Arzoo thankyou
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  • Vishal goswami
    if you have any doubt than please ask me.
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  • Vishal goswami
    we use these formulas
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  • Loyal chakma
    yes sir sure!..I mean to say shouldn't it be f(h,0) instead of f(0,0) as given in Ur answer for the partial derivative fy(h,0)...
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