Let F(x)40 x(1-acosx) - bsin x o and f(0)=1. The value of a and b so that fis a continuous function are :

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( f(x)=frac{x(1+a cos x)-b sin x}{x^{3}} ) ( left.f(x)right|_{0=0}=1 ) and continous, Apply L'Hospita Rule, ( f(x)=frac{x+a x cos x-b sin x}{x^{3}} )

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