How do I create a matlab function using polyder that not only gives the coefficients but also gives the equation

5 views (last 30 days)
My code so far (doesnt work):
function derivativecoefficient = derivpolycalc()
a = input('Enter the coefficent of the polynomial')
x == x
n = input('Enter the power of each x')
derivativecoefficient = polyder(a)
derivative = derivativecoefficient*x^(n - 1)
end
If i just do it where it shows the coeeficents, I could simply do:
function derivativecoefficient = derivpolycalc()
a = input('Enter the coefficent of the polynomial')
derivativecoefficient = polyder(a)
>> derivpolycalc
Enter the coefficent of the polynomial[3,2,5]
a =
3 2 5
derivativecoefficient =
6 2
ans =
6 2
BUT I want a code that will display
6x^2+2x+0..
or maybe it could display
6x^5+2x^3+0
depending on what the original function was.

Accepted Answer

gonzalo Mier
gonzalo Mier on 29 Apr 2019
Edited: madhan ravi on 12 May 2019
I think you need here the function poly2sym:
  4 Comments

Sign in to comment.

More Answers (0)

Categories

Find more on Loops and Conditional Statements in Help Center and File Exchange

Products


Release

R2018b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!