Is it possible to get multiple 0s from fzero?

I have already found the three zeros of this function by setting it to 0, and I am told to use fzero to and compare the two values. However, I have seen a question or two mentioning that I cannot get multiple zeros from fzero. Do I run this three times in separate intervals or is there another way?

fun = @(x) x^3 -4*x^2 +1;
x0 = [-5 5]; % initial interval
x = fzero(fun,x0)

Answer 1

[Sulaymon Eshkabilov]

In your exercise, ie. a polynomial, the first try is roots() and then fzero() with different intervals can be an option for real roots.

SOls = roots([1 -4 0 1])

SOls = 3×1

3.9354 0.5374 -0.4728

fun = @(x) x^3 -4*x^2 +1;
X01 = [2 5];
x1 = fzero(fun,X01)

x1 = 3.9354

X02 = [0 2];
x2 = fzero(fun,X02)

x2 = 0.5374

X03 = [-1 0];
x3 = fzero(fun,X03)

x3 = -0.4728

[Cassandra Meyer]

Okay great, thank you so much!