Warning: Declaration of EasySocialControllerMain::checkToken() should be compatible with Joomla\CMS\MVC\Controller\BaseController::checkToken($method = 'post', $redirect = true) in /home/calcool/domains/calcoolacademy.com/public_html/administrator/components/com_easysocial/includes/controller.php on line 89
Warning: count(): Parameter must be an array or an object that implements Countable in /home/calcool/domains/calcoolacademy.com/public_html/administrator/components/com_easysocial/includes/privacy/privacy.php on line 335
ไม่เข้าใจตัวอย่างที่5ค่ะ ว่าทำไมถุงได้เท่ากับ1 เเล้วตัวxที่คูณกับsin(1/x)นี่หายไปไหน