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- <!DOCTYPE html>
- <html>
- <body>
- <form method="post">
- Liczba początkowa ciągu= <input name="x" /></br>
- Różnica= <input name="r" /></br>
- Ilość wyrazu ciągu= <input name="n" /></br>
- <input type="submit" value="Rozwiąż" />
- </form>
- <?php
- $x = @$_POST['x'];
- $r = @$_POST['r'];
- $n = @$_POST['n'];
- if($x==null || $r==null || $n==null || $r==0 || $n==0 ) {echo "Wprowadź poprawne dane";}
- else{
- $x = @$_POST['x'];
- $r = @$_POST['r'];
- $n = @$_POST['n'];
- $suma=0;
- echo "x = $x <br>r = $r <br>n = $n<br>";
- for($i = 1; $i <= $n; $i++) {
- echo "$x \n ";
- $suma=$suma+$x;
- $x=$x+$r;
- }
- echo "<br>Suma tego ciągu wynosi $suma";
- }
- ?>
- </body>
- </html>
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