Question

nth derivative of y=x^2n

Answer 1

Generally, for $y=x^{m}$ n-the derivative is $\frac{d^{n}y}{dx^{n}}=\frac{m!}{(m-n)!}x^{m-n}$ for n≤m otherwise 0.
Here it's $\frac{(2n)!}{n!}x^{n}$.