(√ 1)²+1=2,s1=√ 1/2;(√ 2)²+1=3,S2=√ 2/2;(√ 3)²+1=4,S3=√ 3/2.求S1²+S2²+S3²+````+S10²?
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(√ 1)²+1=2,s1=√ 1/2;(√ 2)²+1=3,S2=√ 2/2;(√ 3)²+1=4,S3=√ 3/2.求S1²+S2²+S3²+````+S10²?
(√ 1)²+1=2,s1=√ 1/2;(√ 2)²+1=3,S2=√ 2/2;(√ 3)²+1=4,S3=
√ 3/2.求S1²+S2²+S3²+````+S10²?
(√ 1)²+1=2,s1=√ 1/2;(√ 2)²+1=3,S2=√ 2/2;(√ 3)²+1=4,S3=√ 3/2.求S1²+S2²+S3²+````+S10²?
题目不全
假设你的S1=(根号1)/2,S2=(根号2)/2,S3=(根号3)/2,则S10=(根号10)/2
则S1²+S2²+S3²+````+S10²=(1+2+.+10)/4 = 55/4 = 13.75
假设你的S1=根号(1/2),S2=根号(2/2),S3=根号(3/2),则S10=根号(10/2)
则S1²+S2²+S3²+````+S10²=(1+2+.+10)/2 = 55/2 = 27.5