58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
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let a,b,c = 0;
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function input(){
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a = document.getElementById("a").value;
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b = document.getElementById("b").value;
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c = document.getElementById("c").value;
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document.getElementById("ertekek").innerText = "a: " + a + " b: " + b + " c: " + c;
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szamolas();
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}
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function diszkriminans(){
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let diszk = (b*b) - (4 * a * c);
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if(diszk > 0){
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return 2;
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}else if(diszk == 0){
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return 1;
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}else{
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return 0;
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}
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}
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function szamolas(){
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let diszk = diszkriminans();
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console.log("diszk: " + diszk);
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if(diszk == 0){
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document.getElementById("hiba").innerText = "Nincs eredmeny";
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return "Nincs eredmeny";
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}
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if(a < 1){
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document.getElementById("hiba").innerText = "Elsofoku egyenlet";
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return "Elsofoku egyenlet";
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}
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let gyok1 = -b + Math.sqrt((b*b) - (4 *a*c));
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gyok1 = gyok1 / (2*a);
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document.getElementById("eredmeny1").innerText = "Gyok1: " + gyok1;
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let gyok2 = -b - Math.sqrt((b*b) - (4 *a*c));
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gyok2 = gyok2 / (2*a);
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document.getElementById("eredmeny2").innerText = "Gyok2: " + gyok2;
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console.log("Gyok1: " + gyok1);
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console.log("Gyok2: " + gyok2);
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if(diszk == 1){
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let ell1 = a*gyok1*gyok1 + b*gyok1 + c;
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let ell2 = a*gyok2*gyok2 + b*gyok2 + c;
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console.log("ELL1: " + ell1);
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console.log("ell2: " + ell2);
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if(ell1 == 0){
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document.getElementById("hiba").innerText = "Gyök1 jó megoldás";
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}
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if(ell2 == 0) {
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document.getElementById("hiba").innerText = "Gyök2 jó megoldás";
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}
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}
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}
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