How to write nonlinear equation with several variables to use with bisection?

Question

John Doe 2020-11-10

编辑： Matt J 2020-11-11

I'm new to MATLAB so forgive me if this question already exists, I'm just not sure what to search for exactly.

Basically I have the following equation:

4ba^3 + c^3 - 3a*c^2 = 0

I thought I would need to write the following function:

function output = myFunction(a,b,c)
output = 4ba^3 + c^3 - 3a*c^2;
end

and then I could call the bisection method like so:

a = some value
b = some value
bisection(@myFunction,Xl,Xr,iterations,tolerance)

but I get an error not enough inout arguments, which I can only attribute to the lack of a specified c, which I thought the bisection would handle.

How do I correctly write the function so I can use it with bisection?

Answer 1

Matt J 2020-11-11

编辑：Matt J 2020-11-11

a = some value
b = some value
bisection(@(X) myFunction(a,b,X),Xl,Xr,iterations,tolerance)