1.

Differentiate1.χ+1

Answer»

d(x²+1) d(x+1)(x+1)× --------- - ---------- × (x²+1) dx dx--------------------------------------------------- (x+1)²= (x+1)2x - (x²+1) ----------------- (x+1)²

2x²+ 2x-x²-1= ------------------- (x+1)²

= x²+2x-1 ------------- (x+1)²



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