23.10
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Zadania/Z65 - równanie kwadratowe/index.php
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59
Zadania/Z65 - równanie kwadratowe/index.php
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<?php
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$text = '';
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if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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$a = $_POST['a'];
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$b = $_POST['b'];
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$c = $_POST['c'];
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$delta = $b * $b - 4 * $a * $c;
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if ($delta < 0) {
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$text = 'Równanie nie ma rozwiązanie';
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} else if ($delta == 0) {
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$x1 = -$b / (2 * $a);
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$text = 'Równanie ma jedno rozwiązanie: x = ' . $x1;
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} else if ($delta > 0) {
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$x1 = (-$b + sqrt($delta)) / (2 * $a);
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$x2 = (-$b - sqrt($delta)) / (2 * $a);
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$text = 'Równanie ma dwa rozwiązania: x1 = ' . $x1 . ' i x2 = ' . $x2;
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}
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}
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?>
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<!doctype html>
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<html lang="pl">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport"
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content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Z65 - Równanie kwadratowe</title>
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<link rel="stylesheet" href="style.css">
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</head>
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<body>
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<header>
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<h1>Zadanie Z65</h1>
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<h2>Autor: Jakub Grzegorczyk</h2>
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</header>
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<div class="box">
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<p>Napisz program, który oblicza pierwiastki równania kwadratowego. Program dla danych A, B i C ma sprawdzać czy równanie jest kwadratowe, czy ma jeden czy dwa pierwiastki i czy ma rozwiązanie.</p>
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</div>
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<div class="box">
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<form action="index.php" method="post">
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<label for="a">Wprowadź A: </label><br>
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<input type="number" name="a" id="a"><br>
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<label for="b">Wprowadź B:</label><br>
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<input type="number" name="b" id="b"><br>
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<label for="c">Wprowadź C:</label><br>
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<input type="number" name="c" id="c"><br>
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<button type="submit">Wyślij</button>
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</form>
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</div>
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<?php
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if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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echo '<div class="box">' . "A: <b>$a</b><br>B: <b>$b</b><br>C: <b>$c</b><br> ";
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echo "Postać równania: <b>$a * x<sup>2</sup> + $b * x + $c = 0</b><br>";
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echo $text . '</div>';
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}
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?>
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</body>
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</html>
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68
Zadania/Z65 - równanie kwadratowe/style.css
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Zadania/Z65 - równanie kwadratowe/style.css
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* {
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box-sizing: border-box;
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}
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body {
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font-family: Verdana, serif;
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background: #ffffff;
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margin: 15px;
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font-size: 0.9em;
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}
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header {
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border: 2px solid black;
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border-radius: 1em;
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padding: 10px 20px;
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box-shadow: rgba(0, 0, 0, 0.2) 3px 3px 5px;
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background: #f0f0f0;
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}
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input {
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margin-top: 5px;
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margin-bottom: 5px;
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width: 30%;
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border: black 2px solid;
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border-radius: 0.5em;
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height: 2em;
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}
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button {
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padding: 5px;
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width: 30%;
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border: black 2px solid;
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border-radius: 0.5em;
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font-weight: bold;
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margin-top: 10px;
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}
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pre {
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font-family: Verdana, serif;
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}
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.box {
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border: 2px solid black;
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padding: 15px 20px;
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border-radius: 1em;
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margin: 15px 0 10px 0;
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box-shadow: rgba(0, 0, 0, 0.2) 3px 3px 5px;
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}
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.box h3 {
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cursor: pointer;
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}
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td {
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width: 50px;
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height: 50px;
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margin: 0;
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padding: 0;
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}
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tr {
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padding: 0;
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}
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.y {
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background: yellow;
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}
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.b {
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background:blue;
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}
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