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1.ÏÈŒ¦(du¨¬)AßM(j¨¬n)ÐÐÒÔ×ÔÈ»Œ¦(du¨¬)”µ(sh¨´)ežéµ×µÄŒ¦(du¨¬)”µ(sh¨´)ß\(y¨´n)Ëãln(A)  
D0<>E0•r(sh¨ª)   log D0 D4

2. B ¡Á ln(4)    
E* D4 D2 D4

3. e^(B ¡Á ln(4) )
EXP D4 D4