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#1 2014-10-01 01:13:20
- mrpace
- Member
- Registered: 2012-08-16
- Posts: 88
Differential equations problem
write the system
x'(t) = -3x(t) +y(t) +e^t + 1
y'(t)= 2x(t) - cost
In the matrix form x' = Ax + f
could this really be so simple as x' = {-3, 2}x +f ??
or is there more to it?
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#2 2014-10-01 20:53:21
- Olinguito
- Member
- Registered: 2014-08-12
- Posts: 649
Re: Differential equations problem
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Off-topic: Why isn’t LaTeX working? 
Bassaricyon neblina
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#3 2014-10-01 21:10:44
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Differential equations problem
The apostrophe for the derivative has not worked since before the upgrade and if I remember JFF was one of the people along with phrontister(?) that discovered a fix for that problem.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4 2014-10-01 21:25:31
- Olinguito
- Member
- Registered: 2014-08-12
- Posts: 649
Re: Differential equations problem
So instead of x' you have to type x^{\prime}?
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Bassaricyon neblina
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#5 2014-10-01 21:27:15
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Differential equations problem
Amazing that you rediscovered her solution so quickly, I had been unable to find it...
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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