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Catalogs Discussion Forums -> General Knowledge -> tell me u will get 2 salutes.. -> Go to message
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egg came 1st.


dere used 2 b a bird named archeopteryx(oldest known bird)  who at some point of time evolved in2 an animal dat was 1 generation away 4m being a proper chicken.it is believed(n now proven) dat this bird laid eggs which produced d chicken,so no doubt THE EGG CAME FIRST.------------------------------------------------------------------------------


source--------------Reader's Digest (nov.2002 issue),as explained by reknowned scientists.

Catalogs Discussion Forums -> Organic Chemistry -> What is the use of reagent DMSO? -> Go to message
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DMSO being a non proteic solvent,is also used to prepare grignard reagent(RMgx) 4m RX and Mg
Catalogs Discussion Forums -> Analytical Geometry -> Parabola Doubt -> Go to message
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the axis of a parabola is always perpendicular to its directrix.the focus,obviously,passes through the axis.therefore the slope of axis would b= -4/3(bcos slope of directrix=3/4)now v can rite the eqn. of axis passing thru (3,3) with slope= -4/3(form:y-y1=slope*(x-x1)).it will come as-----------3y+4x-21=0
now solve this with eqn of directrix to get x=18/5  y=11/5
Catalogs Discussion Forums -> Analytical Geometry -> Parabola Doubt2 -> Go to message
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i m new on this site so i dunnow whether i've 2 reply ur doubt with its soln. or not,but still here is the soln.
the given parab.is a vertical one,opening up(x^2=9y).therefore its general point is-
(2at,at^2)on satisfying the relation(2at=3*at^2) we get 2 values of t(0 & 2/3).now a=9/4.therefore the points can b obtained by putting t=2/3 &a=9/4 in the general point.
 
 
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