(1+1/1×3)(1+1/2×4)(1+1/3×5)(1+1/4×6)……(1+1/2013×2015) 咋写

(1+1/1×3)(1+1/2×4)(1+1/3×5)(1+1/4×6)……(1+1/2013×2015) 咋写
(1+1/1×3)(1+1/2×4)(1+1/3×5)(1+1/4×6)……(1+1/2013×2015) 咋写

(1+1/1×3)(1+1/2×4)(1+1/3×5)(1+1/4×6)……(1+1/2013×2015) 咋写

(1+1/1×3)*(1+1/2×4)*(1+1/3×5)*(1+1/4*6)……(1+1/98*100)
=(1+1×3)*(1+2×4)*(1+3×5)*(1+4*6)……(1+98*100)/[1×2×3²×4²×.....×98²×99×100）]
=(2²×3²×4²×5²×......×98²...

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(1+1/1×3)*(1+1/2×4)*(1+1/3×5)*(1+1/4*6)……(1+1/98*100)
=(1+1×3)*(1+2×4)*(1+3×5)*(1+4*6)……(1+98*100)/[1×2×3²×4²×.....×98²×99×100）]
=(2²×3²×4²×5²×......×98²×99²)/[1×2×3²×4²×.....×98²×99×100）]
=2×99/100
=1.98

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