Monday, March 13, 2017

mathematics - How do you read the differential mark aloud?


a mathematical expression with differentials in it


How do you read the differential mark?



Answer



Formally, The derivative of...


In full:


Y equals the sine of f-of-x, implies that the derivative of y equals cos f-of-x times the derivative of f of x.


Informally, and depending on dialect, you can say either 'prime' (as per Humbulani's answer) or 'dash' - f prime of x, y-dash etc. The former is predominant in (but is not restricted to) the US, while the latter is relatively common in the wider Anglosphere.



Refer to: How do you pronounce the symbol ' in f'? and What is the practical difference between a differential and a derivative? for further information.


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