Finding vertex of a quadratic equation

Hello,

I am very new to MatLab and cannot figure out how to define variables and then call them into an equation to solve.

I was given the equation y=3x^2-6x+4

and how to find the x and y vertex:

Xvertex= -b/2a

Yvertex=a(Xvertex)^2+b(Xvertex)+c

I have tried using

a = 3;
b = -6;
c = 4;
Xvertex = -b/2*a;
Solve = -b/2*a;
Solve = a(Xvertex)^2+b(Xvertex)+c;

but I cannot figure it out. Any help would be greatly appreciated!

Answer 1

[Ameer Hamza]

If you have the symbolic toolbox

syms x y

y = 3*x^2-6*x+4;
dy = diff(y);
Xvertex = solve(dy);
Yvertex = subs(y, Xvertex);

For your current code, following shows the mistake

a = 3;
b = -6;
c = 4;

Xvertex = -b/(2*a); % use brackets
Yvertex = a(Xvertex)^2+b(Xvertex)+c;