how to solve algebra equation using javascript [closed]

Question

I have lot of algebra equations

so how to solve this using javascript.

I need answer for this equation. you have any idea to solve this or any plugin for that.

Answer 1

Let's say you have an algebraic equation: x² − 7x + 12 = 0.

Then, you can create a function as below:

function f(x) {
    var y = x*x - 7*x + 12;
    return y;
}

and then apply numerical methods:

var min=-100.0, max=100.0, step=0.1, diff=0.01;
var x = min;
do {
    y = f(x);
    if(Math.abs(y)<=diff) {
        console.log("x = " + Math.round(x, 2));
        // not breaking here as there might be multiple roots
    }
    x+=step;
} while(x <= max);

Above code scans for roots of that quadratic equation in range [-100, 100] with 0.1 as a step.

The equation can also taken as user input (by constructing function f using eval function).

You can also use Newton-Raphson or other faster methods to solve algebraic equations in JavaScript.