若数列{an}中,a1=3,a2=6,a(n+2)=a(n+1)-an求第五项

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 22:35:39
若数列{an}中,a1=3,a2=6,a(n+2)=a(n+1)-an求第五项若数列{an}中,a1=3,a2=6,a(n+2)=a(n+1)-an求第五项若数列{an}中,a1=3,a2=6,a(n

若数列{an}中,a1=3,a2=6,a(n+2)=a(n+1)-an求第五项
若数列{an}中,a1=3,a2=6,a(n+2)=a(n+1)-an求第五项

若数列{an}中,a1=3,a2=6,a(n+2)=a(n+1)-an求第五项
a3=a2-a1=6-3=3
a4=a3-a2=3-6=-3
a5=a4-a3=-3-3=-6