mywbut · 2012-11-25 · 2. if x + y = i , prove that the nth derivative of xnyn is n ! y n yn-2x2...

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Page 1: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

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Page 2: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 3: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 4: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 5: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 6: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 7: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 8: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 9: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 10: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 11: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om

Page 12: mywbut · 2012-11-25 · 2. If x + y = I , prove that the nth derivative of xnyn is n ! y n yn-2x2 —(nC3)2 yn-3x3 Answer: Let t = xnyn or, t = tWBUT 2002] Differentiating both sides

mywbut.c

om