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#1 2012-03-25 00:27:05

Marisca
Member
Registered: 2011-04-22
Posts: 53

Exponential help needed!

Hi, I have a question that I don't really understand.

For f(x)=2^x, sketch the graph of the following, labeling asymptotes where appropriate:
a) y=f(x+1)

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#2 2012-03-25 01:06:54

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Exponential help needed!

Hi Marisca;

Start here:

http://www.mathsisfun.com/algebra/asymptote.html

Graph your function over here:

http://www.mathsisfun.com/graph/functio … ymax=8.932

Can you visually identify a possible horizontal asymptote?


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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#3 2012-03-25 01:56:53

Marisca
Member
Registered: 2011-04-22
Posts: 53

Re: Exponential help needed!

So something like y=0?

Also, would I need to sub f(x)=2^x into y=f(x+1)?

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#4 2012-03-25 02:07:45

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Exponential help needed!

Hi Marisca;

Exactly y = 0.

Also, would I need to sub f(x)=2^x into y=f(x+1)

If f(x) = 2^x then f(x+1) = 2^(x+1) wherever you see an x you substitute x + 1.

The equation y = f(x+1) is y = 2^(x+1)


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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#5 2012-03-26 00:31:12

Marisca
Member
Registered: 2011-04-22
Posts: 53

Re: Exponential help needed!

Thank you! I understand it now.

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#6 2012-03-26 00:34:43

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Exponential help needed!

Hi;

Wunderbar! Glad to help!


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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