Normal to a curve : Edexcel Core Maths C3 January 2012 Q4 : ExamSolutions

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  1. ExamSolutions
  2. coordinate
  3. geometry
  4. normal
  5. calculus
  6. differentiation
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Комментарии
Автор

As it says y=pi/4. Generally if it does not say degrees then it will be in radians.

ExamSolutions_Maths
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Going through this paper with this video playing on my Xbox, using my iPhone as a remote! Bloody useful stuff

Parcelhammerhead
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You see when you substitue y = pi/4 into the formula and solve it to find x you will get answer of which is exactly the 2√3....

LilGRG
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Instead of substituting your 'y' into -2sec^2(y+n/12)... you can just substitute your 'y' into 1/-2sec^2(y+n/12) right?

vHamadx
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hello there i types in 2tan(pie/4xpie/12) it don't come out to 2sqr3

rashedmiah
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I have tried calculating the gradient thousand times, still am not getting -8....am typing the same thing on the calc!

devxweb
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Why can't you leave it in terms of dx/dy?

denniso
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why cant we use dx/dy as the gradient?

hey
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Sir, i dont understand why when you have calculated dy/dx, you then reciprocate the answer because of the normal gradient. Why can i not sub in y into dy/dx and then reciprocate?? In that case i get -2 as my gradient of normal and not -8.

envoyizclutch
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EVERYONE, BE POSITIVE AND STAY POSITIVE. TOMORROW C3 WILL BE OUR BITCH! :)

vHamadx