S=1+1/(1+1*2)+1/(1+2*2)+...+1/(1+2(n-1))可否写为S=∑(上标n,下标k=0)1/(1+2k)
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![S=1+1/(1+1*2)+1/(1+2*2)+...+1/(1+2(n-1))可否写为S=∑(上标n,下标k=0)1/(1+2k)](/uploads/image/z/11516671-55-1.jpg?t=S%3D1%2B1%2F%281%2B1%2A2%29%2B1%2F%281%2B2%2A2%29%2B...%2B1%2F%281%2B2%28n-1%29%29%E5%8F%AF%E5%90%A6%E5%86%99%E4%B8%BAS%3D%E2%88%91%28%E4%B8%8A%E6%A0%87n%2C%E4%B8%8B%E6%A0%87k%3D0%291%2F%281%2B2k%29)
S=1+1/(1+1*2)+1/(1+2*2)+...+1/(1+2(n-1))可否写为S=∑(上标n,下标k=0)1/(1+2k)
S=1+1/(1+1*2)+1/(1+2*2)+...+1/(1+2(n-1))可否写为S=∑(上标n,下标k=0)1/(1+2k)
S=1+1/(1+1*2)+1/(1+2*2)+...+1/(1+2(n-1))可否写为S=∑(上标n,下标k=0)1/(1+2k)
上标不对,应该是n-1
S=∑(上标n-1,下标k=0)1/(1+2k)