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Mathematics 7 Online
OpenStudy (thechillwalrus):

Integration Review Help

OpenStudy (thechillwalrus):

OpenStudy (zaynab123):

to find the area under the graph you use the trapezium rule (10/2)x [17+17+ 2x(20+22+21)] =328 SQUARE UNITS

OpenStudy (thechillwalrus):

OKay yeah I thought that was the way to do it but I wasn't sure

OpenStudy (zaynab123):

Do you want help with all the questions?

OpenStudy (thechillwalrus):

Yeah if that ain't a problem

OpenStudy (thechillwalrus):

I'll be here tomorrow and Friday so doesn't have to be all today

OpenStudy (zaynab123):

okay

OpenStudy (thechillwalrus):

So that first one was for part a of the first question right?

OpenStudy (thechillwalrus):

Could you write that first expression with the equation maker thing it is hard to see what values you are multiplying/adding

OpenStudy (zaynab123):

For part A it's just the average speed value from 6:00 to 6:40 so (17+20+22+21+17) /5=82.4mph

OpenStudy (thechillwalrus):

Is that really it? Wow I thoguht I would have to at least use the average value function

OpenStudy (zaynab123):

the trapezium rule is Area=(perpendicular height of trapezium/2) x (extreme lengths + 2x[lengths in between added together])

OpenStudy (thechillwalrus):

Okay

OpenStudy (zaynab123):

I don't know how to do part A i thought i would use the mean but it said use the trapezoid rule so...

OpenStudy (thechillwalrus):

That's okay

OpenStudy (thechillwalrus):

Are you a student?

OpenStudy (zaynab123):

I'm a UK student the curriculum is a bit different

OpenStudy (thechillwalrus):

Calculus?

OpenStudy (thechillwalrus):

This is calculus

OpenStudy (zaynab123):

Yeah we are taught calculus. For the trapezium rule we are only taught how to estimate the area under the curve

OpenStudy (thechillwalrus):

Yeah Okay cool we call it trapezoidal, but it's the same thing And that was last quarter so that isn't what I'm supposed to do in this question

OpenStudy (thechillwalrus):

Shoot dude I have to go I'll "see" you later

OpenStudy (zaynab123):

ok

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