Sign in to your work or school account using your two-step verification method. The purpose of this article is to walk through a typical sign-in experience. For help with signing in, or to troubleshoot problems, see Having trouble with Two-factor Authentication .

备注. 参数可以是数字，或者是包含数字的名称、数组或引用。. 如果数组或引用参数包含文本、逻辑值或空白单元格，则这些值将被忽略；但包含零值的单元格将计算在内。. 如果 array_x 和 array_y 的元素数目不同，函数 SUMXMY2 将返回错误值 #N/A。. 差的平方和的 ...