WACE Stuff > Mathematics Stage 3
Maths 3A/3B
jamonwindeyer:
--- Quote from: anotherworld2b on September 29, 2017, 02:07:22 pm ---Thank you :)
I was also hoping to get help with this question please
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The estimate for the area under the curve just comes from summing the areas of each rectangle. So, use the scales on the axes to get the widths and heights, find the areas, and add em up ;D
Edit:
--- Quote from: RuiAce on September 29, 2017, 02:09:22 pm ---All you need to do here is to add the areas of the rectangles
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^ What he said :)
anotherworld2b:
When I added all the areas of the rectangles I got 9 sq units but the ans says ~8.7 sq units?
--- Quote from: jamonwindeyer on September 29, 2017, 02:09:48 pm ---The estimate for the area under the curve just comes from summing the areas of each rectangle. So, use the scales on the axes to get the widths and heights, find the areas, and add em up ;D
Edit: ^ What he said :)
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jamonwindeyer:
--- Quote from: anotherworld2b on September 29, 2017, 07:30:19 pm ---When I added all the areas of the rectangles I got 9 sq units but the ans says ~8.7 sq units?
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I get about 8.7 - Show us your working? :)
anotherworld2b:
--- Quote from: jamonwindeyer on September 29, 2017, 07:35:29 pm ---I get about 8.7 - Show us your working? :)
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Eric11267:
--- Quote from: anotherworld2b on September 29, 2017, 09:10:40 pm ---
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For the fourth rectangle you incorrectly subbed in the x value as 2.5, when you needed x=3
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