Urg, im really struggling with D.E... 1. nvm i found what i was doing wrong in this one 2. I get an answer with a bunch of e's in it :S. Answer is : I have nooo idea about this ques :S Any help for either questions would be much appriciated
Last edited by AshleyT; Apr 5th 2009 at 09:05 AM.
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Originally Posted by AshleyT Urg, im really struggling with D.E... 1. I get: Where the integrating factor is -x^3 Thus: And i get for an answer: But the answer: I don't get what im doing wrong :S And this one i get a completely wrong answer 2. I get an answer with a bunch of e's in it :S. Answer is : Any help for either questions would be much appriciated For the first, you are correct, teh integrating factor is but there's a mistake in what follows so . Integrating gives which leads to the answer. For the second problem, first put in standard form the integrating factor is so which you can integrate.
Originally Posted by danny arrigo For the first, you are correct, teh integrating factor is but there's a mistake in what follows so . Integrating gives which leads to the answer. For the second problem, first put in standard form the integrating factor is so which you can integrate. Thankyou very much for your reply . However how do you achieve tan x? You integrate cosecxsecx right? I thought this was sec x? Then to e ^ sec x This must have been what i was doing wrong :S
Originally Posted by AshleyT Thankyou very much for your reply . However how do you achieve tan x? You integrate cosecxsecx right? I thought this was sec x? Then to e ^ sec x This must have been what i was doing wrong :S For your integrating factor just to note
Originally Posted by danny arrigo For your integrating factor just to note oic. Thank-you
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