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Let f be a continuous function satisfying    2 t 0 3 2 , t 3 4 dx ) x ) x ( f (  t > 0. Then f          4 2 is equal to -

1.            16 1 2 2
2.             16 1 3
3.            16 1 3
4.             16 1 2 2

Correct answer:            16 1 3

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