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∫exp(x²)dx=??

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Oct 19

# In the expansion (x²+1.2)^n
n is an integer bigger or equal to 3
If the coefficient of x^6 is bigger than 200000, least n value.
No calc

In the expansion (x²+1.2)^n
n is an integer bigger or equal to 3
If the coefficient of x^6 is bigger than 200000, least n value.
No calc

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- I would like to know if there is any method to make an estimation on how big it is a number, in terms of orders of magnitude of n! when n is a big number.
- (x^2) (2-x)^2 = 1 + 2(2-x)^2 I asked this problem on this page a few months ago, but didn’t get any satisfactory answer. I think there is a trick solution to it

https://drive.google.com/open?id=1YiDLM4JAT7emz4EJl_MUX2XeE1RDoE1gHopethis will work