IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: EVIL DOCTOR on April 18, 2010, 10:37:07 am

Title: c2
Post by: EVIL DOCTOR on April 18, 2010, 10:37:07 am

how can i do the trapizium to find the area of a curve

Title: Re: c2
Post by: nid404 on April 18, 2010, 10:38:00 am

sample question ?

Title: Re: c2
Post by: EVIL DOCTOR on April 18, 2010, 10:38:17 am

the trapizium rule--------------

Title: Re: c2
Post by: EVIL DOCTOR on April 18, 2010, 10:41:25 am

Q5 in paper attached

Title: Re: c2
Post by: nid404 on April 18, 2010, 11:10:49 am

Well, it's just using the area of the trapezium...
breaking the curve down to trapeziums, finding the individual areas and adding them up

0<x<0.2

a= 1/2 X(sum of parallel sides) Xheight
  = 1/2 X(1+ 1.246) X 0.2

repeat this for each
0.2<x<0.4, 0.4<x<0.6, 0.6<x<0.8,0.8<x<1
adding up the area for each gives u ans as 1.8278

Title: Re: c2
Post by: Saladin on April 18, 2010, 11:25:15 am

Page 192 on the C2 book.