polyder
Returns the coefficients of the derivative of the polynomial whose coefficients are given by the vector x.
Syntax
polyder(x)
R = polyder(x)
[n,d] =polyder(x,y)
Inputs
- x,y
- Polynomial vectors.
Outputs
- R
- Resulting coefficients.
- n
- Quotient numerator.
- d
- Quotient denominator.
Example
Simple polyder example.
polyder([1,2,-3])R = [Matrix] 1 x 2
2 2 Example
Multi-input polyder example.
x = [1,2,-3]
y = [4,-3,-5]
polyder(x,y)R = [Matrix] 1 x 4
16 15 -46 -1 Example
Multi-input multi-output polyder example.
x = [1,2,-3]
y = [4,-3,-5]
[n,d] = polyder(x,y)
n = [Matrix] 1 x 4
0 -0.6875 0.875 -1.1875
d = [Matrix] 1 x 5
1 -1.5 -1.9375 1.875 1.5625 Comments
When two polynomials are given, returns the derivative of the product x*y. When two inputs and two outputs are given, returns the derivative of the polynomial quotient y/x. The quotient numerator is in n and the denominator in d.