Mathematics

Mathematics

Problem

If y=1+x+x22!+x33!+…,∞y = 1 + x + \frac{x^2}{2!} + \frac{x^3}{3!} + \dots, \infty , then dydx=\frac{dy}{dx} = (a) yy (b) y−1y - 1 (c) y+1y + 1 (d) None of these

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