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Lenguaje
PHP
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Descripción
Dada la ecuación general de la recta Ax + By + C = 0. Hacer un algoritmo que dados los parámetros A, B, C, y un punto en el plano cartesiano (x, y) identifique si el punto hace parte de la recta.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "https://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Recta en un punto del plano cartesiano</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<?php
<html>
<head>
<title>Recta en un punto del plano cartesiano</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
if ($_SERVER['REQUEST_METHOD']=='POST')
{
$A = floatval ($_POST['A']);
$B = floatval ($_POST['B']);
$C = floatval ($_POST['C']);
$x = floatval ($_POST['x']);
$y = floatval ($_POST['y']);
if($A*$x+$B*$y+$C==0)
echo 'Sí pertenece a la recta.<br>'
else
echo 'No pertenece a la recta.<br>'
}
<form method="post">
<table style="text-align: left; margin-left: auto; margin-right: auto;" border="1" cellpadding="1" cellspacing="1">
<tbody>
<tr>
<td>
<label for="A">Ingresa el valor de A:</label>
</td>
<td>
<input name="A" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="B">Ingresa el valor de B:</label>
</td>
<td>
<input name="B" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="C">Ingresa el valor de C:</label>
</td>
<td>
<input name="C" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="x">Ingresa el valor de x:</label>
</td>
<td>
<input name="x" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="y">Ingresa el valor de y:</label>
</td>
<td>
<input name="y" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr align="center">
<td colspan="2" rowspan="1">
<input value="Procesar" type="submit" />
</td>
</tr>
</tbody>
</table>
</form>
</body>
</html>
<table style="text-align: left; margin-left: auto; margin-right: auto;" border="1" cellpadding="1" cellspacing="1">
<tbody>
<tr>
<td>
<label for="A">Ingresa el valor de A:</label>
</td>
<td>
<input name="A" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="B">Ingresa el valor de B:</label>
</td>
<td>
<input name="B" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="C">Ingresa el valor de C:</label>
</td>
<td>
<input name="C" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="x">Ingresa el valor de x:</label>
</td>
<td>
<input name="x" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr>
<td>
<label for="y">Ingresa el valor de y:</label>
</td>
<td>
<input name="y" required="required" step="0.000001" type="number" />
</td>
</tr>
<tr align="center">
<td colspan="2" rowspan="1">
<input value="Procesar" type="submit" />
</td>
</tr>
</tbody>
</table>
</form>
</body>
</html>