Useful tips for everyday
How do you know if a matrix is a covariance matrix? Here’s how. Transform the raw scores from matrix X into deviation scores for matrix…
What is the vector of residuals? The vector of residuals is given by e = y − Xˆβ (2) where the hat over β indicates…
When does a webpage have a redirect loop? Redirect loop is a situation wherein “A points to B, and B points A” Such a redirection…
How to calculate the transfer function in a circuit? The transfer function is obtained by inspecting the circuit and immediately appears in a low-entropy form:…
Why is Family Sharing not available on my iPhone? Check your settings to make sure that you’re signed in everywhere with the same Apple ID,…
What is Salable Quantity in magento2? The Salable Quantity first appears in Magento 2.3 release together with the Multi-Source Inventory system. It allows you to…
Does gdb work with C? Gdb is a debugger for C (and C++). It allows you to do things like run the program up to…
How do I find the hash of a file in Windows? In Windows File Explorer select the files you want the hash values calculated for,…
What is amplifier and how it works? An amplifier takes an input signal from a source, such as a laptop, turntable or CD player, and…
What makes a directed graph symmetric? Symmetric directed graphs are directed graphs where all edges are bidirected (that is, for every arrow that belongs to…