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It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation 1/1+1/(1+2)+1/(1+2+3)+1/(1+2+3+4)+1/(1+2+3+4+5) .
Question type: Mathematical calculation
Solution:
1/1+1/(1+2)+1/(1+2+3)+1/(1+2+3+4)+1/(1+2+3+4+5)
=1/1+1/3+1/(1+2+3)+1/(1+2+3+4)+1/(1+2+3+4+5)
=1/1+1/3+1/6+1/(1+2+3+4)+1/(1+2+3+4+5)
=1/1+1/3+1/6+1/10+1/(1+2+3+4+5)
=1/1+1/3+1/6+1/10+1/15
=1+1/3+1/6+1/10+1/15
=1+0.333333+1/6+1/10+1/15
=1+0.333333+0.166667+1/10+1/15
=1+0.333333+0.166667+0.1+1/15
=1+0.333333+0.166667+0.1+0.066667
=1.333333+0.166667+0.1+0.066667
=1.5+0.1+0.066667
=1.6+0.066667
=1.666667
Answer:1/1+1/(1+2)+1/(1+2+3)+1/(1+2+3+4)+1/(1+2+3+4+5)=1.666667