A continuous function y = f ( x ) is defined in a closed interval [ − 7 , 5 ] . A ( − 7 , − 4 ) , B ( − 2 , 6 ) , C ( 0 , 0 ) , D ( 1 , 6 ) , E ( 5 , − 6 ) are consecutive points on the graph of &#039

Question

A continuous function y = f ( x ) is defined in a closed interval [ − 7 , 5 ] . A ( − 7 , − 4 ) , B ( − 2 , 6 ) , C ( 0 , 0 ) , D ( 1 , 6 ) , E ( 5 , − 6 ) are consecutive points on the graph of ' f ' and A B , BC , C D , D E are line segments. The minimum number of real roots of the equation f [ f ( x )] = 6 is

TestHub · Accepted Answer

f [ f ( x )] = 6 ⇒ f ( x ) = − 2 (or) ​ f ( x ) = 1 f ( x ) = − 2 , has two roots and f ( x ) = 0 has four roots.

Mathematics - Quadratic Equation Question with Solution | TestHub

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