这样说,很容易【误解】的.是这样的吧1/(1*6)+1/(6*11)+1/(11*16)+……+1/(101*106)=1/5*(1/1-1/6)+1/5*(1/6-1/11)……+1/5*(1/101-1/106)=1/5*((1/1-1/6)+(1/6-1/11)……+(1/101-1/106))=1/5*(1/1-1/106)=1/5*(106-1...
1乘6份之一加6乘11份之一加11乘16份之一一直加到101乘106份之一等于几
这样说,很容易【误解】的.是这样的吧1/(1*6)+1/(6*11)+1/(11*16)+……+1/(101*106)=1/5*(1/1-1/6)+1/5*(1/6-1/11)……+1/5*(1/101-1/106)=1/5*((1/1-1/6)+(1/6-1/11)……+(1/101-1/106))=1/5*(1/1-1/106)=1/5*(106-1...