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## #1 2012-09-06 03:01:46

Julieeeee
Guest

### area

I'd like to check my result. I have to find area between

axis. I got

## #2 2012-09-06 03:28:47

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: area

Hi Julieeeee;

Is the purple shaded area what you want?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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## #3 2012-09-06 03:36:49

Julieeeee
Guest

### Re: area

Yes, I also got this picture

## #4 2012-09-06 03:43:26

TheDude
Member
Registered: 2007-10-23
Posts: 361

### Re: area

That's the answer I get Julie.

Wrap it in bacon

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## #5 2012-09-06 03:44:35

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: area

Hi Julieeeee;

Welcome to the forum.

This is what I did:

What did you do?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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Julieeeee
Guest

Thank you guys.
I did

## #7 2012-09-06 04:16:11

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: area

Hi Julieeeee;

That is correct and nice and simple.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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## #8 2012-09-06 08:01:47

Julieeeee
Guest

### Re: area

What about tangent touching graph of

at a point

I get

And also...

But wolfram alpha says

Why is that so?

## #9 2012-09-06 08:21:22

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: area

Hi Julieeeee;

I am getting that for a tangent also. How did you get yours?

For that integral, Maple gets the first answer too. Might be that an absolute value is wrapped around each term and they have both left it out...

When I do it by hand I do not get Alpha's answer either.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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## #10 2012-09-06 09:06:12

Julieeeee
Guest

### Re: area

by implicit differentiation I get

Hence

Thank you bobbym

## #11 2012-09-06 09:08:22

Julieeeee
Guest

### Re: area

bobbym wrote:

When I do it by hand I do not get Alpha's answer either.

## #12 2012-09-06 09:14:48

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: area

Hi;

Have you seen an implicit plot of that equation?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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## #13 2012-09-06 09:19:35

Julieeeee
Guest

### Re: area

did you also do it like me?

## #14 2012-09-06 09:21:56

bobbym
From: Bumpkinland
Registered: 2009-04-12
Posts: 106,389

### Re: area

The tangent problem? No I used geogebra to get the tangents for me. But when I look at the graph I am not so sure of the answer we are all getting.

Question: Are you satisfied with your tangent line?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
No great discovery was ever made without a bold guess.

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