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2. ? , work 3. ? , , 4. ? , x ff(x) , a ff(a) 5. ?, f(x) = 2x + 1 fx 2x + 1f(x) ,13 (2 x 1 + 1)2 f5 (2 x 2 + 1) 2x + 137 (2 x 3 + 1)a2xa+1 6. ?, f(x) = 2x + 1 f x 2x + 1f(x) 7. ?, f(x) = 2x + 1 f x 2x + 1f(x) , ! f, (x) (2x+1) f(x) 8. ! , ! , , ? f , 2x + 1 9. ? ?? f f2x + 1 ! f(x) = 2x + 1 f(x) = 2x + 1 10. ? , = 2 , 1 1 (12 ) 2 f 4 (22 )2 3 9 (32 ) a 2 11. ? , = , 1 ? 4 f 2 ( 4) 9 ? a ? 12. = 2 + 1 , 0 = (2 0) + 1=1 3 = (2 3) + 1=7 13. = 2 1 , 0 =? 1 =? 2 =? 4 =? 3 = ?Created by Aniruddha Adhikary