I am having a hard time summing the seemingly simple finite series:
$$1 - nx + n(n-1)x^2 - n(n-1)(n-2) x^3+\cdots+ (-1)^n n! x^n$$
Thanks for your help in advance!
I am having a hard time summing the seemingly simple finite series:
$$1 - nx + n(n-1)x^2 - n(n-1)(n-2) x^3+\cdots+ (-1)^n n! x^n$$
Thanks for your help in advance!