There is no reason to post comments like "please answer my question". The question has been put, it will be answered when someone has time to look into it, which may be quickly for simple questions, or take longer for more complex ones, or it may take days or even weeks if people are on holiday or working on important tasks. You just have to be patient. And sometimes questions go unanswered because the answer should be better found in the standard literature or via online resources. People answering questions on this forum are not your thesis supervisors or personal mentors, and it's rude to demand answers promptly.