functions Flashcards
1
Q
what is the image set of a function
A
the range of output values
2
Q
what is the domain of a function
A
the range of valid inputs
3
Q
why might a composite function not exist
A
if the range of the inner function is not a subset of the domain of the outer function
i.e. values produced by the inner function are not valid inputs of the outer function
4
Q
what is the gradient vector
A
(df/dx)i + (df/dy)j
5
Q
what is the contour of a function
A
the set of points (x,y) for which the function f(x,y) = c
