Editing Marginal revenue (section)

==Law of diminishing marginal returns==
In [[microeconomics]], for every unit of input added to a firm, the return received decreases.
When a variable factor of production is put into a firm at a constant level of technology, the initial increase in this factor of production will increase output, but when it exceeds a certain limit, the increased output will diminish and will eventually reduce output in absolute terms.<ref name="Diminishing returns">Bondarenko, Peter. "microeconomics". Encyclopedia Britannica, Mar 25, 2023, https://www.britannica.com/topic/microeconomics. Accessed 21 April 2023.</ref>