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[" 158.The values of "a" and "b" such th...

[" 158.The values of "a" and "b" such that "],[qquad lim_(x rarr0)(x(1+a cos x)-b sin x)/(x^(3))=1," are "],[[" (a) "(5)/(2),(3)/(2)," (b) "(5)/(2),-(3)/(2)],[" (c) "-(5)/(2),-(3)/(2)," (d) None of these "]]

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