The problem comes when the icon that it defaults to for printing is a right load, but the only way that envelopes can be loaded is in the center of the tray. I have an HP Colorlaserjet 3600 and an HP Officejet Pro 8600 and both load this way.
A technical definition of a function is: a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
A function is always defined as of a variable which tells us what to replace in the formula for the function. For example, () = + tells us: The function is a function of . To evaluate the function at a certain number, replace the with that number.