|
MTM[diff] - differentiation or partial differentiation
|
|
Calling Sequence
|
|
diff(f)
diff(f, x)
diff(f, n)
diff(f, x, n)
diff(f, n, x)
|
|
|
Parameters
|
|
|
f
|
-
|
array or expression
|
|
x
|
-
|
variable
|
|
n
|
-
|
non-negative integer
|
|
|
|
|
|
Description
|
|
|
•
|
The diff command computes the partial derivative of the expression a with respect to x. The most frequent use is diff(f(x),x), which computes the derivative of the function f(x) with respect to x.
|
|
•
|
If the variable of differentiation is not specified, it will be determined automatically via findsym(f,1).
|
|
•
|
If the parameter n is specified, the nth order derivative is computed.
|
|
•
|
If the derivative cannot be expressed the diff function call itself is returned.
|
|
•
|
If f is an array, the diff(f) command computes elementwise derivatives of f. The result, R, is formed as R[i,j] = diff(f[i,j], x, n).
|
|
|
Download Help Document
Was this information helpful?
