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thank you thankyou thankyou I see it now.... i had the negative log and so cheated assuming that the 3Q was 300 instead of 900 (which i secretly knew was wrong...lol....but coudnt get rid of negative log so sort fudged the results)
Nice work, Ricky!
And, of course, the 100e-0.03t term decreases with t, so it should be added.
You use a different method for solving differential equations than I'm used to, and quite an awkward one at that. See if you can follow this, and if you want, I can try to find the error in your steps.
Integrate both sides
Hi, my first post, and i need help with some applications of calculus to physics