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#1 2007-09-08 16:53:56

aznssj5gohan
Member
Registered: 2007-09-08
Posts: 1

Limits

Show with ε and δ that

lim x->-2   x^2+3x+1=-1

Can someone help me?Please

Last edited by aznssj5gohan (2007-09-08 17:07:55)

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#2 2007-09-08 22:52:15

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: Limits

Last edited by JaneFairfax (2007-09-17 23:07:22)

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#3 2007-09-09 15:11:47

aznssj5gohan
Member
Registered: 2007-09-08
Posts: 1

Re: Limits

Thanks a lot JaneFairfax

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#4 2007-09-13 08:11:00

aznssj5gohan
Member
Registered: 2007-09-08
Posts: 1

Re: Limits

Show with ε and δ that

lim x->5  (x^3-6x^2+15x-47)/(x^2-8x+4)=-3

Can anyone help me with this problem? Please

Last edited by aznssj5gohan (2007-09-14 14:31:09)

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#5 2007-09-14 09:09:40

aznssj5gohan
Member
Registered: 2007-09-08
Posts: 1

Re: Limits

bump

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#6 2007-09-14 10:20:46

Ricky
Moderator
Registered: 2005-12-04
Posts: 3,791

Re: Limits

Doing this kind of problem with epsilon and delta definitions is pretty ridiculous.  I would prove that polynomials are continuous, then that division of continuous functions is continuous where the divisor does not equal 0.  Otherwise, things start getting crazy.


"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

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#7 2007-09-14 13:54:25

aznssj5gohan
Member
Registered: 2007-09-08
Posts: 1

Re: Limits

Sorry i typed it wrong

Show with ε and δ that

lim x->5  (x^3-6x^2+15x-47)/(x^2-8x+14)=-3

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#8 2007-09-15 15:42:31

aznssj5gohan
Member
Registered: 2007-09-08
Posts: 1

Re: Limits

Wait so the problem goes on forever?

Show with ε and δ that

lim x->5  (x^3-6x^2+15x-47)/(x^2-8x+14)=-3

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