Hi I am having trouble with the following questions: Solve the differential equations 1) not sure what i should do next 2) P.S
Last edited by mr fantastic; August 27th 2010 at 02:36 AM. Reason: Fixed latex, re-titled.
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I'm not sure what you did with number 2, but it's linear and separable.
Originally Posted by matheagle I'm not sure what you did with number 2, but it's linear and separable. where does the +x go??
Matheagle has taken out as a factor. Its called factoring by grouping.
This is my answers but it doesn't match the answer's in book 1) 2)
Originally Posted by Paymemoney This is my answers but it doesn't match the answer's in book 1) 2) What are your book's answers? Note: -C can be 're-branded' as B, e^C can be 're-branded' as A since in both cases C is arbitrary and therefore B and A are also arbitrary.
Book's Answers are 1) actually got it right where k=-c 2)
Originally Posted by Paymemoney [snip] 2) Mr F says: There should be a negative in front of the ln. Make the necessary corrections in your working below and then recall from my previous post the note about 're-branding' C .... ..
i don't understand why should there be a negative at the front of ln? The intergal of
The rule you're thinking of is that However, the sign of must be positive for that rule to work.
Originally Posted by Ackbeet The rule you're thinking of is that However, the sign of must be positive for that rule to work. oh i see now
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