(3+1)(3^2+1)(3^3+1)(3^4+1)(3^5+1)……(3^32+1)
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(3+1)(3^2+1)(3^3+1)(3^4+1)(3^5+1)……(3^32+1)
(3+1)(3^2+1)(3^3+1)(3^4+1)(3^5+1)……(3^32+1)
(3+1)(3^2+1)(3^3+1)(3^4+1)(3^5+1)……(3^32+1)
(3+1)(3^2+1)(3^3+1)(3^4+1)(3^5+1)……(3^32+1)
=1/2×(3-1)(3+1)(3^2+1)(3^3+1)(3^4+1)(3^5+1)……(3^32+1)
=1/2×(3^2-1)(3^2+1)(3^3+1)(3^4+1)(3^5+1)……(3^32+1)
……
=1/2×(3^64-1)
=(3^64-1)/2
1+2-3-3-3-3=?
1+3+2+1+1x2+3
[(2^3-1)(3^3-1)...100^3-1)]/[(2^3+1)(3^3+1)...(100^3+1)]=?
(1+1/2+1/3+...
(3+1)(3^2+1)(3^3+1)(3^4+1)…(3^32+1)步骤
1^3+2^3+3^3+...+99^3+100^3
(-1/3)^2除以(-1/3)^3*(1/3)^3除以3^-2*(-3)^0
求和Sn=1+(1+3)+(1+3+3^2)+(1+3+3^2+3^3)+.+(1+3+3^2+3^3+...+3^n-1)
1,1,1,2,2,2,3,3,3,填三阶幻方
3题 1、2、3
求四阶行列式:2 -1 3 2 3 -3 3 2 3 -1 -1 2 3 -1 3 -1
1,1/2,3/2,3/8,( ),( )
1+1+2+2+3+3+````````````````````````````+99999
1/(2^3)+1/(2^3+1)+1/(2^3+2)+1/(2^3+3)+...+1/(2^4-1)
1+1+1+1+1+1+2+1+8+3+3+3+3+3+3+3+3+3+3+3+3+3+8+3+8+3+8+3+3+8+3+3=?
计算:2(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)(3^32+1)+1
计算:(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)
(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)