Will You expect me to calculate this?!

Computer Science Level 2

∑ i = 1 100 ( − 1 ) i i ! \large{\sum^{100}_{i=1} \dfrac{(-1)^i}{i!}}

Answer in 5 decimal places


The answer is -0.63212.

Md Zuhair by Md Zuhair , 20, India

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2 solutions

Hasmik Garyaka
Sep 21, 2017

P y t h o n Python sum((-1)**x/factorial(x) for x in range(1,100)) Mathematically it is 1/e-1 Taylor sum.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

Python is the right boi for this 

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s = 0
f = 1
for i in range(0, 100):
    f *= (i+1)
    s += ((-1) ** (i+1)) / f
print(s)

0 Helpful 0 Interesting 0 Brilliant 0 Confused

Cpp works fine too

Md Zuhair - 3 years, 7 months ago

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Yeah, but python is the right language for handling mini problems, particularly this one. Simple syntax, that is.

Arkajyoti Banerjee - 3 years, 7 months ago

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