Maths edexcel c4 coordinate geometry
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Original post by TenOfThem
How should I proceed? @@
Thanks
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Original post by Lamalam
The integral between curve and y axis would be given by between limits and
Original post by brianeverit
The integral between curve and y axis would be given by between limits and
why square root 2 and minus square 2?
how would you approach this question?
sorry i know i am stupid ><
thanks!
Original post by Lamalam
why square root 2 and minus square 2?
how would you approach this question?
sorry i know i am stupid ><
thanks!
how would you approach this question?
sorry i know i am stupid ><
thanks!
The limits will be the values of t which make x=0, i.e the points on the y axis.
Original post by brianeverit
The limits will be the values of t which make x=0, i.e the points on the y axis.
Then isnt t= -1 and 1 ?
This is what I got when I draw the graph .
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Original post by Lamalam
and the curve should be a parabola with horizontal axis y=0 and vertex at (-2,0)
Sorry, my mistake. I was looking at question 8 not question 7.
(edited 10 years ago)
Original post by brianeverit
and the curve should be a parabola with horizontal axis y=0 and vertex at (-2,0)
and the curve should be a parabola with horizontal axis y=0 and vertex at (-2,0)
I think you are looking at Q8
Original post by Lamalam
the question is asking about the area of the finite region bound by the loop so your limits are wrong. And also you can take only the upper area and then multiply by 2
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Original post by Lamalam
you can take from 0 to 1 and then multiply by 2 as it is symmetrical around the x axis.
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Original post by Lamalam
So that agrees with the book's answer?
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Original post by StUdEnTIGCSE
Yes
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Original post by StUdEnTIGCSE
When I looked at my answer again , I sstart wondering why I did this correctly @@ I put the two limits of intergral according to when x=0, its seems not reasonable @@,
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(edited 10 years ago)
Original post by Lamalam
When I looked at my answer again , I sstart wondering why I did this correctly @@ I put the two limits of intergral according to when x=0, its seems not reasonable @@,
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I started FP1 just the last month so its baffling me too.
I'm gonna investigate it tonight
Original post by Lamalam
When I looked at my answer again , I sstart wondering why I did this correctly @@ I put the two limits of intergral according to when x=0, its seems not reasonable @@,
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I'm afraid this is beyond me
Original post by TenOfThem
...
How is this possible?
Thank you
Original post by StUdEnTIGCSE
How is this possible?
Thank you
Thank you
? I don't get what you mean
Original post by Lamalam
? I don't get what you mean
That would be the answer to your confusion...hopefully
Original post by StUdEnTIGCSE
That would be the answer to your confusion...hopefully
umm still a bit confused,
would you please explain to me further? 
thanks a lot!!
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