[Tex/LaTex] What kind of integral is this


can anyone tell me what kind of package or what to type for getting an integral like this on the image, where the \frac{happines}{time} is below death? All the integrals I can find will push the frac to after death.

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Best Answer

With the help of the bigints package (cf. Big integral sign), and some negative space, using Steven's code as a starting point.

enter image description here

\mathit{Life} = \hspace{-0.8em} \bigint_{\mathit{birth}}^{\mathit{death}}\hspace{-2.5em}\frac{\mathit{happiness}}{\mathit{time}} \Delta \mathit{time}
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