# IntegrationWatch

#1
Ok suppose the line crosses the positive x axis at 3 if I integrated using the limits 3 to 0,
Would I find the shaded area or 2 x the shaded are i:e(shaded are + the area below given that they are equal It looks the area below is within the range of limit and surprisingly I haven't got 0 even the range of limit includes both + and - equal areas so does anyone have any advice to criticise this as to see which area I would get depending how I integrate it....
0
4 years ago
#2
(Original post by Merdan)
Ok suppose the line crosses the positive x axis at 3 if I integrated using the limits 3 to 0,
Would I find the shaded area or 2 x the shaded are i:e(shaded are + the area below given that they are equal It looks the area below is within the range of limit and surprisingly I haven't got 0 even the range of limit includes both + and - equal areas so does anyone have any advice to criticise this as to see which area I would get depending how I integrate it....
What equation are you using for the curve, Cartesian or parametric?
0
#3
(Original post by brianeverit)
What equation are you using for the curve, Cartesian or parametric?
Parametric.
0
4 years ago
#4
(Original post by Merdan)
Parametric.
For the parametric equation system the limits of integral are clear,
because for another parameter of t will be x>0 and y>0 or
x>0 and y<0 smoultaneously.

So when y=f(t) and x=g(t)

I think your equations may be

then fro the upper shaded region the integration limits are: t from \pi/2 to 0
0
X

new posts
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

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

### University open days

• University of East Anglia
All Departments Open 13:00-17:00. Find out more about our diverse range of subject areas and career progression in the Arts & Humanities, Social Sciences, Medicine & Health Sciences, and the Sciences. Postgraduate
Wed, 30 Jan '19
• Solent University
Sat, 2 Feb '19
• Sheffield Hallam University
Sun, 3 Feb '19

### Poll

Join the discussion

Remain (665)
80.7%
Leave (159)
19.3%