MATLAB: How to simplify a algebra function

matlab function

Hi guys,

Could anyone help me on simplify this function? I wanna remove the brackets.

f(x)=(x^2 + 1)^3

Thank you

Best Answer

Hi,

syms f(x)
fun = f(x) == (x^2 + 1)^3
fun = collect(fun,x)

results in:

fun =
f(x) == (x^2 + 1)^3
fun =
f(x) == x^6 + 3*x^4 + 3*x^2 + 1

Related Solutions

MATLAB: FMINUNC cannot continue.

You have to save your function myfun in separate file myfun.m

function [ f ] = myfun( x )
f = 3*x(1)^2 + 2*x(1)*x(2) + x(2)^2;    % Cost function
end

And then execute commands:

x0 = [1,1];
[x,fval] = fminunc(@myfun,x0)

Or simpler (in one line without additional file):

[x,fval] = fminunc(@(x)3*x(1)^2 + 2*x(1)*x(2) + x(2)^2,[1 1]);

MATLAB: Cant simplify an algebraic equation

It seems to slimplify nicely for me:

syms A B C x 
g(x) = (A*(x + 1)^3 + C*(x + 1)^3 + B*(x - 1)*(x + 1)^2)/((x - 1)*(x + 1)^3);
g = simplify(g, 'Steps', 20)
g(x) =
A/(x - 1) + B/(x + 1) + C/(x - 1)

Do you want something different?

Best Answer

Related Solutions

MATLAB: FMINUNC cannot continue.

MATLAB: Cant simplify an algebraic equation

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