-0.5x+4 x∈l,4 -1.7x2+1.7x2-0.5x+2 xe[4,5] H(x)= 3.4x2-5.1x2-2.2x+1.5 x∈5,6 -1.8x2+3.6x2-2.2x-2.4xe[6.7刀 -0.4x+12.4 xe7,103 2 3 2 3 3 2 0.5 4 [1,4] 1.7 1.7 0.5 2 [4,5] ( ) 3.4 5.1 2.2 1.5 [5,6] 1.8 3.6 2.2 2.4 [6,7] 0.4 12.4 [7,10] x x x x x x H x x x x x x x x x x x  − +   − + − +    =  − − +  − + − −    − + 