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 one year ago
If P(3,2) is one end of the focal chord PQ of the parabola y^2+ 4x + 4y =0, then the slope of the normal at Q is:
(A) 1/2. (B) 2. (C) 1/2. (D) 2
 one year ago
If P(3,2) is one end of the focal chord PQ of the parabola y^2+ 4x + 4y =0, then the slope of the normal at Q is: (A) 1/2. (B) 2. (C) 1/2. (D) 2

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shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1Whats your progress ?

DLS
 one year ago
Best ResponseYou've already chosen the best response.0\[\LARGE (y+2)^{2}=4(1x) \] so vertex=(1,2)

DLS
 one year ago
Best ResponseYou've already chosen the best response.0this diagram is not possible :/ acc to what im thinking..

DLS
 one year ago
Best ResponseYou've already chosen the best response.0\[\LARGE 2y \frac{dy}{dx}+4+4\frac{dy}{dx}=0\] i do everything i know :P because i dont know exactly what to do :o

DLS
 one year ago
Best ResponseYou've already chosen the best response.0\[\LARGE \frac{dy}{dx}=\frac{4}{2y+4}\]

DLS
 one year ago
Best ResponseYou've already chosen the best response.0for normal it will be .. \[\LARGE \frac{2y+4}{4}=\frac{8}{4}\] =2?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1okay, vertex is (1,2)

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1focus would have been (1,0) if vertex had been (0,0)

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1because of this shifting, new vertex = ?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1i mean new focus= ?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1shift (1,0) 1 unit to the right and 2 units down

DLS
 one year ago
Best ResponseYou've already chosen the best response.0that's what i wrote earlier :P

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1now you have eqn of line PQ

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1find coordinate of Q

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1P(3,2) F(2,2) slope = 4/5

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1so slope = 4/5 eqn of line = ?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1eqn of parabola = y^2 + 4x+ 4y =0 eqn of line = 5y + 4x + 2 =0 solve both to solve for Q

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1Note that you'll obtain 2 solutions from here, 1 should easily be (3,2)

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1So its easy, form a quadratic, use sum of roots thing, you already know (3,2) is a solution, just find other coordinate

DLS
 one year ago
Best ResponseYou've already chosen the best response.0abe yaar short method bata :P i took the wrong road nvm

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1Arey ho to gaya hai, bas Q nikalna hai,

DLS
 one year ago
Best ResponseYou've already chosen the best response.0why are we solving both the equations together? Q doesn't lie on parabola does it?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1Ofcorse it does! PQ is the focal chord

DLS
 one year ago
Best ResponseYou've already chosen the best response.0but P doesn't lie on parabola?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1Of course it does, what are you saying!

DLS
 one year ago
Best ResponseYou've already chosen the best response.0but logically when I saw.. Vertex=(1,2) P=(3,2) how big is the parabola :X

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1are you sleep deprived? o.O

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1I don;t understand your query

DLS
 one year ago
Best ResponseYou've already chosen the best response.0dw:1359795719275:dw how does it lie on the parabola? forget the substi. method for a while

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1dw:1359795779003:dw

DLS
 one year ago
Best ResponseYou've already chosen the best response.0that would happen if \[\LARGE y^2=4ax\]

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1So, shall we find Q now ?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1just forma quad, rest is easy

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1y^2 + 4x+ 4y =0 5y + 4x + 2 =0 =>4x = 5y 2 make that substitution

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1Okay, one root of this is 2,right ?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1use sum of roots or any other legit method, find other root.

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1actually we needn;t find x,

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1slope of normal = (2y+4)/4

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1tumhi ne to upar differentiate karke nikala tha

DLS
 one year ago
Best ResponseYou've already chosen the best response.0i dont want to live on this planet anymore

DLS
 one year ago
Best ResponseYou've already chosen the best response.0why did we do all this then?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1We had to find y coordinate of Q

DLS
 one year ago
Best ResponseYou've already chosen the best response.0\[\LARGE \frac{2y+4}{4}\]

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.14/(2y+4) ye tangent ka hai, right?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1slope of tangent * slope of normal = 1

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1abhi bhi confidence nahi aya?

DLS
 one year ago
Best ResponseYou've already chosen the best response.0dont say 1/2 dil tut jaega :'(

DLS
 one year ago
Best ResponseYou've already chosen the best response.0answer to wahi hai be :P 1/2

DLS
 one year ago
Best ResponseYou've already chosen the best response.0http://www.goiit.com/posts/list/geometrysimpleparabolaquestion14790.htm

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1usme kya uqes hai aur tumne kya copy kiya hai! :3

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1parabola ka eqn dekho

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1abe parabola ka eqn dekho

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1y^2 + 4x + 4y =0 tumne likha hai y^2 + 4x + 4 =0 hai

DLS
 one year ago
Best ResponseYou've already chosen the best response.0\[\LARGE \frac{4}{4+4}\] that s what i got in last in register

DLS
 one year ago
Best ResponseYou've already chosen the best response.0myequation is right!! 101% ques might be different..

DLS
 one year ago
Best ResponseYou've already chosen the best response.0issi Q ke hisb se 1/2 aya hai

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1ha, uska ans 1/2 hoga, lekin iska 1/2 hai.

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1kon se saal ka hai ?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1mujhe to nahi lag raha abhi tak kahi koi galti ki hai ?

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1(y+2)^2 = 4(1)((x1) vertex = (1,2) focus was (1,0) for vertex (0,0) so new focus will be (0,2)

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1eqn of line = (y2) = m(x+3)

DLS
 one year ago
Best ResponseYou've already chosen the best response.0http://www.theparentingdad.com/wpcontent/uploads/2012/08/babyfacepalm.jpg

DLS
 one year ago
Best ResponseYou've already chosen the best response.0wait i didnt get the focus thing :/

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1focus (1,0) hoga y^2 = 4ax me

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1ham (1,0) like kar rahe the

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1y^2 + 4x + 4y =0 and 4x = 63y => y^2 + y 6 =0 1 ans hai 2, dusra ho jayega 3

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1ab slope of normal = 4/(2y+4) = 2 hahahha

DLS
 one year ago
Best ResponseYou've already chosen the best response.0par kya hai ke na focus wala part smaj nahi aya :P

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1ye ques repost karo firse, koi expert batayega, ise close kar do

DLS
 one year ago
Best ResponseYou've already chosen the best response.0do we have a greater expert than you ?:P

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1wo to dikh gaya, :3

DLS
 one year ago
Best ResponseYou've already chosen the best response.0BOLNA dhang se focus wala bus :'(

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1y^2 = 4ax ke type ka hai hamara eqn

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1waha focus (1,) hota hai jab vertex (0,0) hota hai.

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1yaha vertex (1,2) hai

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1to focus (1+1 , 02) = (0,2)

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1wait wait, 1/2 aa to raha hai!

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1(2y+4)/4 y=3 slope = 1/2

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1last me thora pagla gaya tha mai, ho to gaya, 1/2

DLS
 one year ago
Best ResponseYou've already chosen the best response.0"nahi hamara answer sahi hai :p "

shubhamsrg
 one year ago
Best ResponseYou've already chosen the best response.1focus toot gaya tha! :

DLS
 one year ago
Best ResponseYou've already chosen the best response.0mai kar raha hoon dubara bus hogaya..1m..BC 1 ghanta hogya :/

DLS
 one year ago
Best ResponseYou've already chosen the best response.0ahaaa maza agaya :P mast Q :P

DLS
 one year ago
Best ResponseYou've already chosen the best response.0chal lunch:P thanda hogaya :/
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