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November 01, 2025, 04:18:14 pm
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Author Topic: Easy modelling with differential equations?  (Read 693 times)  Share 

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ahat

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Easy modelling with differential equations?
« on: August 11, 2013, 09:05:14 am »
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A population of plants is decreasing according to the differential equation dP/Dt = -P/50 where t = days, find the time taken for the population to decease to 25% of its original number.

I'm unsure of how to approach this. Help appreciated.
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ahat

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Re: Easy modelling with differential equations?
« Reply #1 on: August 11, 2013, 09:19:22 am »
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Don't worry - got it! :D
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satya

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Re: Easy modelling with differential equations?
« Reply #2 on: August 17, 2013, 01:27:31 pm »
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is the answer 69 days??
sorry i just want to see i am on the right track
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ahat

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Re: Easy modelling with differential equations?
« Reply #3 on: August 19, 2013, 08:40:28 pm »
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yeah :)
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