text: Sgn value of a polynomial | C # program to find sign value of a polynomial ; returns value of poly [ 0 ] x ( n - 1 ) + poly [ 1 ] x ( n - 2 ) + . . + poly [ n - 1 ] ; Initialize result ; Evaluate value of polynomial using Horner 's method ; Returns sign value of polynomial ; Driver code ; Let us evaluate value of 2 x3 - 6 x2 + 2 x - 1 for x = 3
code: using System ; class GFG { static int horner ( int [ ] poly , int n , int x ) { int result = poly [ 0 ] ; for ( int i = 1 ; i < n ; i ++ ) result = result * x + poly [ i ] ; return result ; } static int findSign ( int [ ] poly , int n , int x ) { int result = horner ( poly , n , x ) ; if ( result > 0 ) return 1 ; else if ( result < 0 ) return - 1 ; return 0 ; } public static void Main ( ) { int [ ] poly = { 2 , - 6 , 2 , - 1 } ; int x = 3 ; int n = poly . Length ; Console . Write ( " Sign ▁ of ▁ polynomial ▁ is ▁ " + findSign ( poly , n , x ) ) ; } }