Subtract 1 from both sides:

Multiply through by -1:

Can you finish off? (use logs)

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- Jan 17th 2011, 09:48 AM #1

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## Help......Please!

Been at this for hours..

the temperature ,P, of a conductor at time, t, is given by

P=P^0[1-e-^-t/T]

Where P^0 is the initial temperature and T is a constant.

Express T in terms of P,P^0 and t and determine its value when p^0 = 190, P= 20 and t = 40

Any help would be much appreciated...Thanks

- Jan 17th 2011, 09:52 AM #2

- Jan 17th 2011, 10:18 AM #3

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- Jan 17th 2011, 10:26 AM #4

- Jan 18th 2011, 08:44 AM #5

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Thanks for the spoiler, Matches what I had thankfully!

I am stuck with final question - After this hopefully thats me done with algebra!!

Show using factor theorem,that 2x-1 is a factor of...

2x^4-x^3-6x^2+5x-1

and hence express 2x^4-x^3-6x^2+5x-1 as a product of a linear & cubic factor

- Jan 18th 2011, 09:10 AM #6

- Jan 18th 2011, 10:03 AM #7

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- Jan 18th 2011, 10:20 AM #8