The phrase "determinant is" is correct and usable in written English.
You could use it in a sentence such as "The determinant is necessary for solving linear systems of equations."
A key determinant is national savings.
(The final determinant is weight, not size).
But a third determinant is possibly the most important: participation.
The key determinant is: would I go back?
There is, in short, massive asymmetry of information in the post-16 education system and the critical determinant is class.
The biggest determinant is not the values that students are exposed to at home, but peer norms at school.
In addition to elevation, another determinant is the annual distribution of rainfall.
If you look at the stats for housebuilding – and indeed house prices – since Macmillan's day, it's clear that the single most important determinant is policy.
Strip that factor out, and the next main determinant is building standards (fire doors, sprinklers and so on).
The basic and predominant determinant is marginal productivity: the continuous accumulation of capital depresses the rate of interest.
So, its determinant is also non-negative.
