oT+1 O→ (7i+1)jo72+1) 0→0 72 7i+7225 Re I m  1 2 1 2 T T T T + 1  →   → 0 I m ( 1)( 1) 1 jT1 + jT2 + Re I m  →   → 0 1 1 jT + 1 