amandanunnery33
22.07.2019 •
Physics
Gwhich of the following are second-order linear homogeneous recurrence relations with constant coefficients? circle all that apply and explain each answer. a. a_k=2a_(k-1)-5a_(k-2) b. b_k=kb_(k-1)+b_(k-2) c. c_k=c_(k-1)⋅c_(k-2)^2 d. d_k=3d_(k-1)-πd_(k-2) e. r_k=r_(k-1)-r_(k-2)-2 f. s_k=100s_(k-2) g. u_k=2u_(k-1)
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Ответ:
3
Explanation:
Valence electrons are the number of electrons in the biggest ring.
Hope this helps!!!