The differential equation of all parabol...

The differential equation of all parabolas whose axis 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)

`x(d^(2)y)/(dx^(2))-(dy)/(dx)=0`

`x(d^(2)y)/(dx^(2))+(dy)/(dx)=0`

`x(d^(2)y)/(dx^(2))-y=0`

`x(d^(2)y)/(dx^(2))-(dy)/(dx)=0`

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NIKITA PUBLICATION-Differential Equation-MULTIPLE CHOICE QUESTION

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