Question

Let g: R3 →R2 be a differentiable function such that g(1, −1, 3) = (2,5) and the following equation is true.
Dg(1, −1, 3) =


1 −1 0
4 0 7
Suppose that f: R2→ R2 is defined byf(x, y) = (2xy, 4x –y + 8). What is D(f g)(1, −1, 3)?
D(f g)(1, −1, 3) ?

I am sort of confused on how to approach this. Is it wanting me to integrate to find D(f of g)?