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

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: Igcseboy on April 28, 2010, 06:09:42 pm

Title: C2 edexcel doubt
Post by: Igcseboy on April 28, 2010, 06:09:42 pm
Maths C2 edexcel June 2006 question 10 d....


help

thanxx
Title: Re: C2 edexcel doubt
Post by: Saladin on April 28, 2010, 07:11:50 pm
You have to divide the question into two parts.

First, use integration to find the area under OA.

The, find the area of the triangle.

Then add them to gether.

\int_{0}^{2}x^3-8x^2+20x

Then find the area of the triangle:

\frac{1}{2}(x_b-x_a)y_a

That comes to:

\frac{1}{2}(\frac{10}{3}-2)16

As f(2)=16

So when you add them together, you get \frac{100}{3}