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...Mathematics hwkasolutions p problem use the arc length formula to nd of curve y x checkyouranswerbynoting that thecurve is a line segment and calculating its by distance solution since l given z dx rst note two endpoints are thus gives results agree find exact for we have therefore r ln page sontag october math hwk solns continued s dy last step was obtained using long division integrate second term will need from text du u c ll this cosx sinx tanx tan sec secx secxdx evaluate integral secudu secu tanu ahawk ying at meters per an altitude accidentally drops prey parabolic trajectory falling described equation until hits ground where height above horizontal traveled in calculate time it dropped when value be so or which has positive here same as consult tables plan making substitution...