exponential equations q Watch

theweirdo
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how would you solve this?
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mqb2766
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Its a fairly standard exponential decay (geometric sequence) type question.

At t = 0
x(0) = D = 10

For 0<=t<5
x(t) = D*exp(-t/8)

At t=5
D = 10*exp(-5/8) + 10

You then have the given exponential decay for x(t) where t lies in (5,8] like between (0,5)

(Original post by theweirdo)
how would you solve this?
question and answer attached
Last edited by mqb2766; 2 weeks ago
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theweirdo
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(Original post by mqb2766)
Its a fairly standard exponential decay (geometric sequence) type question.

At t = 0
x(0) = D = 10

For 0<=t<5
x(t) = D*exp(-t/8)

At t=5
D = 10*exp(-5/8) + 10

You then have the given exponential decay for x(t) where t lies in (5,8] like between (0,5)
aaah thanks i get it now
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