So the question is to determine the Maclaurin series up to term in x^3. I'm stuck on one particluar one. I keep feeling this has clicked then get set back.
(1 + x)*e^-x
So I have worked out the differentials
(1+x)*e^-x
-xe^-x
(x-1)*e^-x
-(x-2)*e^-x
Subbed in for when x = 0
1
-e^-1
e^-2
e^-1
And then put it into the formula for Maclaurin series but I am going wrong somewhere because it isn't the right answer. Any help is appreciated thanks. I don't know if i'm starting off wrong on this on or halfway....
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RHCPfan
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- 12-08-2016 15:41
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- 12-08-2016 15:54
(Original post by RHCPfan)
So the question is to determine the Maclaurin series up to term in x^3. I'm stuck on one particluar one. I keep feeling this has clicked then get set back.
(1 + x)*e^-x
So I have worked out the differentials
(1+x)*e^-x
-xe^-x
(x-1)*e^-x
-(x-2)*e^-x
Subbed in for when x = 0
1
-e^-1
e^-2
e^-1
And then put it into the formula for Maclaurin series but I am going wrong somewhere because it isn't the right answer. Any help is appreciated thanks. I don't know if i'm starting off wrong on this on or halfway....
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RDKGames
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- 12-08-2016 15:54
(Original post by RHCPfan)
So the question is to determine the Maclaurin series up to term in x^3. I'm stuck on one particluar one. I keep feeling this has clicked then get set back.
(1 + x)*e^-x
So I have worked out the differentials
(1+x)*e^-x
-xe^-x
(x-1)*e^-x
-(x-2)*e^-x
Subbed in for when x = 0
1
-e^-1
e^-2
e^-1
And then put it into the formula for Maclaurin series but I am going wrong somewhere because it isn't the right answer. Any help is appreciated thanks. I don't know if i'm starting off wrong on this on or halfway....
but when you sub in x=0, there shouldn't be anyterms because
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RHCPfan
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- 12-08-2016 16:00
(Original post by RDKGames)
Your differentials are correct.
but when you sub in x=0, there shouldn't be anyterms because
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RHCPfan
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- 12-08-2016 16:01
(Original post by RDKGames)
Your differentials are correct.
but when you sub in x=0, there shouldn't be anyterms because
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