x2+ 0.023x-0.0023=0ãæ±x?è¿ç¨æ¯ææ ·çï¼è°¢è°¢
x2+ 0.023x-0.0023=0
10000x2+230x-23=0
Î = 230²+4*10000*23= 972900
x1 = ( -230+â972900 ) / (2*10000)
= ( -230+10â9729 ) / 20000
= ( -230+10â9729 ) / 20000
= ( -23+â9729 ) / 2000
= 0.037817846668321
x2 = ( -23-â9729 ) / 2000
= -0.060817846668321
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