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# Just need a little hand with some integration. watch

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1. So I have drawn a diagram and I share MrM's confusion re your confusion

The integral between 0.5 and 4 gives you the area under the curve and then there is a clear rectangle to the left of that area that you need

Have you clearly shaded the area that you need on your diagram
2. Ive just realised where ive gone wrong! I thought the the bit in the question where it said "coordinate axis" meant that you leave out the rectangle out! I understand completely! Thanks brb while i work it out

3. I made you a picture to check whether we are both talking about the same thing!

4. (Original post by antonio108)
Ive just realised where ive gone wrong! I thought the the bit in the question where it said "coordinate axis" meant that you leave out the rectangle out! I understand completely! Thanks brb while i work it out
The coordinate axes (plural) are the lines x = 0 and y = 0.
5. Ah yes!, for the red area i got 2 and for the orange I got 3/2. So the total area is 7/2.
Thanks a lot for your help! Its appreciated :3

If i was given this question in an exam how do you think is the best way to approach it? Is it vital that i show the examiner the sketch anyway?
6. (Original post by antonio108)
Ah yes!, for the red area i got 2 and for the orange I got 3/2. So the total area is 7/2.
Thanks a lot for your help! Its appreciated :3

If i was given this question in an exam how do you think is the best way to approach it? Is it vital that i show the examiner the sketch anyway?
That answer is right and I think you will need the sketch and the examiner will appreciate it too.

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Updated: October 27, 2011
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