1000000t 3 - 6000t 2 +12t T ] 3 T | 2 0,001 0,008 0,007 1 =500[ + - ]= W 3 3 3 3 T /2 T T T 1 1 4000000t 3 -18000t 2 + 27t P2= T [ (-1) dt + 2 (3 - 2000t ) dt ]= 2 T [t | 2