Question

hey guys i need help
The value of

int_{5}^{6} 1/x^2 dx is

Answer 1

\[d/dx({5}^({6})/x^2) = {-31250/x^3}\]

Answer 2

http://www.wolframalpha.com/input/?i=derivative+of+ {5}^{6}+1%2Fx^2

Answer 3

it's incorrect