This discussion is closed.
edufly
Badges: 0
Rep:
?
#1
Report Thread starter 16 years ago
#1
The curve has equation y=2 + 5x - x^2

The normal to the curve at x=3 has equation y=x+5
The normal also meets the curve again at (1,6)

'Find the area of the region bounded by the curve and normal?'


I would be grateful for any helping in finding the area as I am kinda baffled and my P1 exam is 2MRW AFTERNOON!!

Cheers!

(this question is on p170 of the edexcel green p1 book at the bottom of the page)
0
Bhaal85
Badges: 9
Rep:
?
#2
Report 16 years ago
#2
(Original post by eddiedaboss)
The curve has equation y=2 + 5x - x^2

The normal to the curve at x=3 has equation y=x+5
The normal also meets the curve again at (1,6)

'Find the area of the region bounded by the curve and normal?'


I would be grateful for any helping in finding the area as I am kinda baffled and my P1 exam is 2MRW AFTERNOON!!

Cheers!

(this question is on p170 of the edexcel green p1 book at the bottom of the page)
Integrate:

{(x+5)-(2+5x- x^2)} dx between the two points of intersection
0
Bhaal85
Badges: 9
Rep:
?
#3
Report 16 years ago
#3
(Original post by Bhaal85)
Integrate:

{(x+5)-(2+5x- x^2)} dx between the two points of intersection
If you solve the initial equation simultaneously you should end up with the following quadratic:

x+5=2+5x-x^2

rearrange to get:

x^2-4x-3=0 then solve to get:

x=1 and x=3 then use them points.
0
edufly
Badges: 0
Rep:
?
#4
Report Thread starter 16 years ago
#4
Thanks alot ppl.

I have done so many questions in the last week that I would be sooo disappointed not to improve on my original C.
0
Bhaal85
Badges: 9
Rep:
?
#5
Report 16 years ago
#5
(Original post by eddiedaboss)
Thanks alot ppl.

I have done so many questions in the last week that I would be sooo disappointed not to improve on my original C.
Btw I believe it was only me who has contributed

I got a C grade overall for my A2, only resitting to get an A.
0
X
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Do you get study leave?

Yes- I like it (147)
60.49%
Yes- I don't like it (11)
4.53%
No- I want it (68)
27.98%
No- I don't want it (17)
7%

Watched Threads

View All