We will not do your homework for you; it has been given you for a good reason, to help in the learning process. To put it tritely, we learn by doing.
Unless you have been extremely poorly taught, you will have been given, or pointed toward, all the theorems/definitions you require at least to make a start.
But you are struggling, or short of time, so why not ask on a forum?
This is a form of cheating - if it gets you a higher grade than your classmates, it is down-right dishonest. Fundamentally though, you are cheating on yourself, again to put it tritely.
However, at their own discretion, members may be willing to offer help for homework questions, but only under the following conditions:
You must show all your attempts at a solution to date, no matter how foolish they turn out to be. Requests without this content may be deleted - they will certainly be edited to discourage members from helping;
The help you may be offered will (I hope) generally be in the form of hints - think about them carefully and follow up; none us likes whistling in the wind;
Do not pressurize - if your assignment is due in at 8,30 am tomorrow, that's your problem. You cannot expect potential helpers to sit up all night on your behalf;
And finally, remember that any member in a position to help you will have solved your problem (and many others) themselves, generally without help. So be nice - a thank you is always appreciated