sabi06
Badges: 4
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
Report Thread starter 7 years ago
#1
the diagram shows part of the graph of y=5 cos(x/2). find the area of the shaded regions - ibo 1997

I know how to solve these kind of problems but the x value is not given on the graph.
If the x value was give id find the area enclosed between the curve, x-axis and y-axis by differentiation, but i dont know how to start because a x value is not given.
The book answer is 10.

Please explain the steps

thanks in advance
0
reply
ghostwalker
Badges: 17
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report 7 years ago
#2
(Original post by sabi06)
...
Difficult to comment without seeing the diagram. Can you provide a photo of the whole question, or a link to it?
0
reply
Mr M
Badges: 20
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#3
Report 7 years ago
#3
(Original post by sabi06)
the diagram shows part of the graph of y=5 cos(x/2). find the area of the shaded regions - ibo 1997

I know how to solve these kind of problems but the x value is not given on the graph.
If the x value was give id find the area enclosed between the curve, x-axis and y-axis by differentiation, but i dont know how to start because a x value is not given.
The book answer is 10.

Please explain the steps

thanks in advance
Attach the diagram and then show what you have tried so far.
0
reply
tiny hobbit
Badges: 15
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#4
Report 7 years ago
#4
(Original post by sabi06)
the diagram shows part of the graph of y=5 cos(x/2). find the area of the shaded regions - ibo 1997

I know how to solve these kind of problems but the x value is not given on the graph.
If the x value was give id find the area enclosed between the curve, x-axis and y-axis by differentiation, but i dont know how to start because a x value is not given.
The book answer is 10.

Please explain the steps

thanks in advance
I'm guessing that the region that you are after is upto where the curve crosses the x-axis, i.e. upto where y = 0. Use the equation of the curve to find the x-coordinate at that point.
0
reply
indigobluesss
Badges: 20
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#5
Report 7 years ago
#5
(Original post by sabi06)
the diagram shows part of the graph of y=5 cos(x/2). find the area of the shaded regions - ibo 1997

I know how to solve these kind of problems but the x value is not given on the graph.
If the x value was give id find the area enclosed between the curve, x-axis and y-axis by differentiation, but i dont know how to start because a x value is not given.
The book answer is 10.

Please explain the steps

thanks in advance

Do you have any pictures of the diagram?
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
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

Has advance information helped during your exams?

Yes (23)
71.88%
No (7)
21.88%
I didn't use it to prepare (2)
6.25%

Watched Threads

View All