Question

For the function $f(x)=x^4(12 / n x-7)$ match the following :

Column I		Column II
A	If $( a , b )$ is the point of inflection then $a - b$ is equal to	p	3
B	If $e^t$ is a point of minima then $12 t$ is equal to	q	1
C	If graph is concave downward in $( d , e)$ then $d +3 e$ is equal to	r	4
D	If graph is concave upward in $(p, \infty)$ then the least value of $p$ is equal to	s	8

• A. $( A ) \rightarrow( s ),( B ) \rightarrow( r ),( C ) \rightarrow( p ),( D ) \rightarrow( q )$
• B. $( A ) \rightarrow( p ),( B ) \rightarrow( q ),( C ) \rightarrow( r ),( D ) \rightarrow( s )$
• C. $( A ) \rightarrow( s ),( B ) \rightarrow( r ),( C ) \rightarrow( p ),( D ) \rightarrow( p )$
• D. $( A ) \rightarrow( r ),( B ) \rightarrow( p ),( C ) \rightarrow( p ),( D ) \rightarrow( q )$

Answer 1

Answer: (A)

Correct answer is (a) $( A ) \rightarrow( s ),( B ) \rightarrow( r ),( C ) \rightarrow( p ),( D ) \rightarrow( q )$