Pk=1+6+11+.+(5(K-1)-4)+(5K-4)求Pk+1

问题描述:

Pk=1+6+11+.+(5(K-1)-4)+(5K-4)
求Pk+1

Pk+1=1+6+11+.+(5(K-1)-4)+(5K-4)+1
P(k+1)=1+6+11+.+(5K-4)+(5K+1)+1