2.1数列的概念与简单表示法（2）一、选择题(每小题5分,共40分)1.已知数列an满足a1=1,an+1=an+n,则a3的值为()A.2B.3C.4D.52.数列an中,若a1=1,an+1=-1,则a2016=()A.-1B.-C.D.13.已知数列an中,an-1=man+1(n1),且a2=3,a3=5,则实数m等于()A.0B.C.2D.54.设数列an满足:a1=2,an+1=1-,记数列an的前n项之积为n,则2016的值为()A.-B.1C.D.25.已知数列an中,a1=b(b为任意实数),an+1=-(nN*)能使an=b成立的n的值可以是下面的()A.2013B.2014C.2015D.20166.若a1=1,an+1=,则给出的数列an的第4项是()A.B.C.D.7.数列an中,an=-2n2+29n+3,则此数列中最大值是()A.107B.108C.108D.1098.在数列an中,a1=15,3an+1=3an-2(nN*),则该数列中相邻两项的乘积为负数的项是()A.a21和a22B.a22和a23C.a23和a24D.a24和a25二、填空题(每小题5分,共10分)9.已知数列an满足an+1=若a1=,则a2016=_.10.在数列an中,若a1=2,an+1=an+ln,则an=_.
