function with parameters

[Cyrille Piatecki]

Since two days we struggle with a function phi(x,m,s).

It seems impossible to fix m and s to some value and to use functiongraph since function graph works with the variable implicitely defined (without reference to the variable). In the case of the Laplace-Gauss density function we have tried

class fct_phi {
    constructor(s,m) {
        this.m=m;
        this.s=s;
    }
    phi(x) {
        return (1/(Math.pow(2*Math.PI,1/2)*this.s))*Math.pow(Math.exp(1),-(1/2)*Math.pow((x-this.m)/this.s,2));
    }
};

f=new fct_phi(1,0);

board.create('functiongraph',[f.phi,-1,1],{strokeColor:"red"});

but obviously it doesn't display any thing sinece the function is not evaluated.

[Tom Berend]

Dear Cyrille,

Try this:    board.create('functiongraph', [(x) => f.phi(x), -1, 1], { strokeColor: "red" });

Regards
Tom

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[Cyrille Piatecki]

Thanks Tom.