Problem with double integration

Question

I was trying to type a double integral as follows:

\documentclass{article}

\begin{document}

\[ 
x=x_0+\int_{t_0}^{t} u_0  +\frac{1}{m} \int_{t_0}^{t} F(t) \,dt \,dt
\]

\end{document}

I would like to ask how can I use brackets to separate the inner integral from the rightmost "dt"? Thank you

Answer 1

Perhaps you used an incorrect syntax, as brackets work just fine:

\documentclass{article}

\begin{document}

\[ 
x=x_0+\int_{t_0}^{t}\left[ u_0  +\frac{1}{m} \int_{t_0}^{t} F(t) \,dt\right] \,dt
\]

\end{document}

If the size of the brackets doesn't suit your needs, replace \left and \right with other commands like \bigl and \bigr.