F.4 M2 Chap 2
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2010-10-02 3:50 am
✔ 最佳答案
Pk(k-1)-Qk(k+1) = kPk^2 - Pk - Qk^2 - Qk = k(P - Q)k^2 - (P + Q)k = kSoP - Q = 0 .....(1)and - (P + Q) = 1.....(2)By (1) P = Q , sub it to (2) :- (P + P) = 1P = - 1/2Q = - 1/2
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