Question: Write the first six terms of the sequence for n = 0, 1, 2, 3, 4 and 5.

f_n(x) = (-1)ⁿ x²ⁿ

(2n)!

The exclamation sign stands for “Factorial” where 5! = 5*4*3*2*1 and

n! = n*(n-1)(n-2)….2*1. 0! is defined as equal to one. Do not calculate the factorial, leave it as 2!, 4!, etc.