The phrase "the basic function of" is correct and usable in written English.
You can use it when you want to introduce a description of how something works or what it is intended to do. For example: "The basic function of the device is to convert solar energy into electrical energy."
His livelihood is the rationale for his candidacy—"that the basic function of the government is deals.
"The basic function of a board is to oversee management and to hold it accountable".
The officials said that the basic function of Iraq's intelligence apparatus in the United States has been to monitor Iraqi dissidents.
Our current e-books, he writes, are fine at the basic function of letting us read a text.
In the basic function of identifying emerging threats, "many central banks have been performing poorly," they wrote.
Then build a pinhole camera and conduct a presentation for your class, explaining what you learned and demonstrating the basic function of a camera using the one you made.
"He actually has expressed a theory of governance that is more concrete than a lot of the others, which is that the basic function of the government is deals.
In politics, Macdonald was a radical democrat, but he worried that middlebrow pieties about tolerance and democracy were undermining what he saw as the basic function of criticism: discrimination.
In Washington the debate is about the needs of the large banks, but there's no debate about the basic function of these banks.
The basic function of worship the establishment and maintenance of the relation between human beings and the holy includes many facets.
The basic function of the social fraternity is to serve as a collegiate "home" and dormitory for its members, but the emphasis varies from school to school.
