help Differential Equation exam

Please read the instruction before you BID. \r\ni need help to solve 5 or six differential equation problems which I will send you at 11.50 pm (UTC +8.00) Beijing time. Make sure you are online at that time.\r\nI will send you the picture of the questions , you have to solve the question in 20 minutes on a paper with clear writing and send me by taking picture. \r\nI have attached the book as well as some sample problems , please Bid if you can solve question just by seeing them as if its exam because of short time.\r\n\r\nthe budget is 20$. bids above that will be ignored , timing is really important. \r\nI will not award you untill you see the problem and give me solution , so you have to trust me.\r\nPlease mention word \"faisal\" so that i know you have read this all.\r\n\r\nattached is the book and sample questions.