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is, the decreasing interval is (2) Find the local maximum and minimum values of The function is increasing in interval, decreasing in interval, therefore, the function exist the local minimum value, it is (3)Find the intervals of concavity and the inflection points.Therefore, the concave upward interval are, the concave downward interval are, and the inflection points are ,(4) Find the asymptote lines of the cureTherefore, the line is a horizontal asymptote(考點(diǎn):,、。近幾年經(jīng)常會(huì)考一道作圖題。這種題目應(yīng)該在注意的點(diǎn)主要包括函數(shù)的定義域,對(duì)稱性,增減區(qū)間,極值點(diǎn),凹凸性,拐點(diǎn),以及漸近線等。)Let R be the region bounded by the curve , and the line and.(a)Evaluate the area of the region R. R=(b)Find the volume of th