I solved the DE . I got .

I've been asked to determine if .

So I think that the solution of the DE should be so that I can reach .

I just want to be sure we can talk about negative values of .

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- Feb 28th 2010, 04:27 PMarbolisFirst order DE
I solved the DE . I got .

I've been asked to determine if .

So I think that the solution of the DE should be so that I can reach .

I just want to be sure we can talk about negative values of . - Feb 28th 2010, 04:40 PMChris L T521
- Mar 1st 2010, 02:54 AMOrbentNegative?
Your t can be negative, because the anti derivative of 1/t is ln|t| + C. The variable is an absolute value, which of course means that if it is negative you just make it positive :)

I am not entirely sure how to solve this problem because you did not give an x component to go with the t. Usually you are given x, or are can find it out. The ln|-1| is 0, so that would mean C would equal whatever x value you find. Hope that explains it :) - Mar 1st 2010, 06:56 AMarbolis