<html>
<head>
<title>MODULO BUSCAR CODIGO</title>
<!-- Latest com180led and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVn1802lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" integrity="sha384-fLW2N01lMqjakBkx3l/M9EahuwpSfeNvV63J5ezn3uZzapT0u7EYsXMjQV+0En5r" crossorigin="anonymous">
<!-- Latest com180led and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
</head>
<body>
<div class="row">
<div class="col-md-2"></div>
<div class="col-md-2">
<center><h1>FUNCIONES</h1></center>
<form method="POST" action="funciones.php" >
<div class="form-group">
<label for="Variable">Variable</label>
<input type="number" name="Variable" class="form-control" id="Variable">
</div>
<label for="F1">F1</label>
<td><input type="number" min="any" step="0.00000000001" name="F1" class="form-control" placeholder="F1" ></td>
<label for="F2">F2</label>
<td><input type="number" min="any" step="0.000000000000000001" name="F2" class="form-control" placeholder="F2" ></td>
<center>
<input type="submit" value="Consultar" class="btn btn-info" name="btn2">
</center>
</form>
<style type="text/css">
table, th, td {
border: 1px solid black;
border-collapse:collapse;
}
th, td {
padding: auto;
}
</style>
<body>
<h3> funciones</h3>
<table style="width: 100%">
<tr>
</tr>
</table>
<script src="" async defer></script>
</body>
<?php
if(isset($_POST['btn2']))
{
$V = $_POST['Variable'];
$F1 = $_POST['F1'];
$F2 = $_POST['F2'];
if($F1=="")
{echo "Digita una variable";}
else
{
}
}
$x=$F1;
$h=$V;
$f1=4*pow(($x+$h),2)-5*($x+$h)+7;
$f=4*pow(($x),2)-5*$x+7;
$F=($f1-$f)/$h;
echo "<table>";
echo"<th>F=(f1-f)/h </th>";
echo"<th>f=4*pow((x),2)-5*x+7;</th>";
echo"<tr>";
echo"<td>".$f."</td>";
echo"<td>".$F."</td>";
echo "</tr>";
echo "</table>";
?>
</body>
</html>
