Jawabanmu

Jawaban paling cerdas!
2014-05-15T19:45:52+07:00
X1''+x2'' = (x1 + x2)'' - 2x1x2 = k'' - 2(k-1)
                                     10 = k" - 2k + 2
0 = k'' - 2k - 8
0 = (k-4)(k+2)
jadi k = 4 atau k = -2
3 4 3