gb7nash said:If you define the root to be the value of x such that f(x) = 0, there are no roots (do you see why?). Do you instead mean the values of x such that f(x) is undefined?
kappa said:yes i was rong i need the value of f(x)=... when x is from [-1,1] (for 21 values) I do it with fsolve?
gb7nash said:Do you just want to plug in 21 equidistant values of x between [-1,1] and find what f(x) is for each value? If so, you could use:
x_values = linspace(-1,1,21)
y_values = subs(y,x) 'y is the function in terms of x
gb7nash said:You might want to look up the syntax for subs. I don't currently have access to matlab, but I'm pretty sure this should work:
syms x;
x_values = linspace(-1,1,21)
y_values = subs((1 − 6x^2)^-1,x)
The roots of a function, also known as the zeros or x-intercepts, are the values of x that make the function equal to zero. They can be found by setting the function equal to zero and solving for x.
To find the roots of a function, you can use a variety of methods such as factoring, the quadratic formula, or graphing. The method used depends on the type and complexity of the function.
Yes, a function can have multiple roots, depending on its degree. For example, a quadratic function can have up to two roots, while a cubic function can have up to three roots.
The roots of a function are the values of x that make the function equal to zero. Factors of a function are expressions that, when multiplied together, result in the function. The roots of a function are the same as the solutions to the factors of the function.
The roots of a function represent the x-values of the points where the graph crosses the x-axis. The number of roots and their values can affect the shape and behavior of the graph. For example, if a function has two real roots, the graph will cross the x-axis at those points and form a "U" shape. If a function has no real roots, the graph will not intersect the x-axis at any point.