Mathematics

Mathematics

Problem

### Passage V (Q. Nos. 58 to 60) Let y=∫u(v)v(x)f(t)dty = \int_{u(v)}^{v(x)} f(t) dt , let us define dydx\frac{dy}{dx} as dydx\frac{dy}{dx} =v′(x)f2(v(x))−u′(x)f2(u(x))= v'(x) f^2(v(x)) - u'(x) f^2(u(x)) and the equation of the tangent at (a,b)(a, b) and y−b=(dydx)(a,b)(x−a)y - b = \left(\frac{dy}{dx}\right)_{(a,b)} (x - a) . If f(x)=∫1xet1/2(1−t2)dtf(x) = \int_{1}^{x} e^{t^{1/2}} (1 - t^2) dt , then ddxf(x)\frac{d}{dx} f(x) at x=1x = 1 is a. 0 b. 1 c. 2 d. -1

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