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1. Someone please explain part e (

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3. (Original post by Homeboy)

Are you messed up in the head?

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4. Dude, its 1 mark. Chill the f out.

Sorry I can't help more. My FM exams were a year ago and so I'm a bit rusty.
5. (Original post by IssyHUB)
What exam year is that paper?
It's the mock paper

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6. x^2=cos^2t
y^2=sin^2(2t)

x^2+y^2= 1, so 1 = cos^2t+sin^2(2t)?

Might have to rearrange using double angle formula idk?
7. (Original post by _thequeen)
x^2=cos^2t
y^2=sin^2(2t)

x^2+y^2= 1, so 1 = cos^2t+sin^2(2t)?

Might have to rearrange using double angle formula idk?
Thanks used that to get the Cartesian for between 0<t<pi but don't know how to use it to do part E

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8. (Original post by Medicjug)
Thanks used that to get the Cartesian for between 0<t<pi but don't know how to use it to do part E

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Surely that is the answer to part E because the parameter in the question is the same as the original ones? :/

EDIT: Sorry, just reread the question.
9. (Original post by _thequeen)
Surely that is the answer to part E because the parameter in the question is the same as the original ones? :/

EDIT: Sorry, just reread the question.
Any ideas why it's minus

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10. (Original post by Homeboy)

DA FUDGE IS WRONG WITH U BRO!!

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Updated: May 10, 2015
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