Author Topic: C1 HELP!  (Read 1122 times)

Offline Rozalin

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C1 HELP!
« on: January 10, 2010, 08:41:00 pm »
Q11)
The curve C has equation

y = x^3 - 2x^2 - x + 9

The point P has co-ordinates (2,7)
a)Show that P lies on C
b)Find the equation of the tangent to c at P

The point Q also lies on C
Given that the tangent to c at Q is perpendicular to the tangent to c at P

c) Show that x-cordinate of Q is 1/3 (2+sqrt 6)

I need help in part c pleaseeee!!!!!!!!!!!!!!!
ttytytytytytyty

Offline Rozalin

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Re: C1 HELP!
« Reply #1 on: January 10, 2010, 09:17:26 pm »
any1?  ???

Offline astarmathsandphysics

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Re: C1 HELP!
« Reply #2 on: January 10, 2010, 09:50:00 pm »
Me looking now

Offline astarmathsandphysics

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Re: C1 HELP!
« Reply #3 on: January 10, 2010, 09:59:09 pm »
here

Offline Rozalin

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Re: C1 HELP!
« Reply #4 on: January 10, 2010, 10:00:20 pm »
OMIGOSH ASTAR YOU'RE MY LIFE SAVIOUR ;D THANKS ALOT!!!!!!!

Offline astarmathsandphysics

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Re: C1 HELP!
« Reply #5 on: January 10, 2010, 10:06:18 pm »
No probs. Good luck

Offline Ghost Of Highbury

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Re: C1 HELP!
« Reply #6 on: January 11, 2010, 06:15:49 am »
wats C1??
divine intervention!

AL*Eagle

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Re: C1 HELP!
« Reply #7 on: January 11, 2010, 07:39:21 am »
wats C1??

its like Paper 1 in maths
math has different papers..
C1 C2 C3 C4
M1 M2 M3 M4
S1 etc...