已知数列an满足a1=0,an+1=an+2n那么a2010的值是悬赏财富10
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已知数列an满足a1=0,an+1=an+2n那么a2010的值是悬赏财富10已知数列an满足a1=0,an+1=an+2n那么a2010的值是悬赏财富10已知数列an满足a1=0,an+1=an+2
已知数列an满足a1=0,an+1=an+2n那么a2010的值是悬赏财富10
已知数列an满足a1=0,an+1=an+2n那么a2010的值是
悬赏财富10
已知数列an满足a1=0,an+1=an+2n那么a2010的值是悬赏财富10
由an+1=an+2n
所以an+1-an=2n
an-an-1=2(n-1)
……
a2-a1=2
上式两边相加,an+1-a1=n(2+n)/2
所以an=2n^2-2n/2
a2010=2010*2009
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