Hey
Can you please tell me if the integration in my photo is correct
Thank you
Muchas gracias
Hello BadMonkey
Welcome to Math Help Forum!The lower limit of the integral in each case is $\displaystyle 0$, and the upper limit is $\displaystyle a$. This will give a positive sign in the answer.
Also, each result can be simplified, by dividing by $\displaystyle a$.
Grandad