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Register the password reset verification method for a work or school account. If you forgot your work or school password, never got a password from your organization, or have been locked out of your account, you can use your security info and your mobile device to reset your work or school password. Your administrator must turn on this feature ...

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。. 差的平方和的计算 ...