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![[Post New]](/templates/default/images/icon_minipost_new.gif) 5 Dec 2007 23:08:00 IST
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The equation to the tangent yo the parabola y^2=8x is y=x+2.The point on this line from which the other tangent to the parabola is perpendicular to given tangent is? easy one but I am not getting the answer,plz just send the answer the book says -2,0 I am getting -1,1
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Anyone who has never made a mistake has never tried anything new
You can never solve a problem on the level on which it was created.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity
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5 Dec 2007 23:11:59 IST
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Answer is (-2,0)
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The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor.
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Equation of tangent is y=mx+a/m
here a=2, m=1.
For a tangent perpendicular to this tangent, m=-1.
Therefore equation of the second tangent is y=-x-2.
Solving the equations of both the tangents, you get (-2,0)
Rate me if satisfied.
Tell me if not understood.
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The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor.
It is during our darkest moments that we must focus to see the light.
Check out my blog at:
http://tarinbansal.blogspot.com/
Posts:
Can marks really judge a student??
Some myths about Chemical Engineering.
(A must see for every student)
Back to goiit, this time with Baby Veerappan. :D |
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5 Dec 2007 23:16:16 IST
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tarin iz abso ryt... rate him... me too ....agar man kare.haha
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5 Dec 2007 23:18:02 IST
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oh sorry I made a silly mistake,anyway Thanx Tarin
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Anyone who has never made a mistake has never tried anything new
You can never solve a problem on the level on which it was created.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity
Purpose of solving a problem is not simply to get the answer(the answer is only an evidence) but to develop your thinking ability |
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