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The differential equation of all parabolas whoseaxis are parallel to the y-axis is(a)`( b ) (c) (d)(( e ) (f) d^(( g )3( h ))( i ) y)/( j )(( k ) d (l) x^(( m )3( n ))( o ))( p ) (q)=0( r )`(s)(b) `( t ) (u) (v)(( w ) (x) d^(( y )2( z ))( a a ) x)/( b b )(( c c ) d (dd) y^(( e e )2( f f ))( g g ))( h h ) (ii)=C (jj)`(kk)(c)`( d ) (e) (f)(( g ) (h) d^(( i )3( j ))( k ) y)/( l )(( m ) d (n) x^(( o )3( p ))( q ))( r ) (s)+( t )(( u ) (v) d^(( w )2( x ))( y ) x)/( z )(( a a ) d (bb) y^(( c c )2( d d ))( e e ))( f f ) (gg)=0( h h )`(ii)(d) `( j j ) (kk) (ll)(( m m ) (nn) d^(( o o )2( p p ))( q q ) y)/( r r )(( s s ) d (tt) x^(( u u )2( v v ))( w w ))( x x ) (yy)+2( z z )(( a a a ) dy)/( b b b )(( c c c ) dx)( d d d ) (eee)=C (fff)`(ggg)A. ` (d^(3)y)/(dx^(3))= 0`B. `(d^(2)x)/(dy^(2))=C`C. ` (d^(3)y)/(dx^(3))+(d^(2)x)/(dy^(2))=0`D. `(d^(2)y)/(dx^(2))+2(dy)/(dx)=C` |
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Answer» Correct Answer - a The equation of a member of the family of parabolas having axis to Y - axis is ` y = Ax^(2) + Bx +C` ltbRgt ` rArr (dy)/(dx) = 2Ax + B` ` (d^(2)y)/(dx^(2)) = 2A rArr (d^(3)y)/(dx^(3))= 0` |
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