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My tex

 \iint \limits_{-\infty}^{+\infty} 

It looks like

enter image description here

I want two limits there above and below.

How can you have two limits above and below the two integrals?

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How 'bout just using \int twice? – Steven B. Segletes Dec 5 '13 at 14:44
up vote 8 down vote accepted

You are probably expecting iterated integral, not double integral. Hence




\Int_{-\infty}^{+\infty} \Int_{-\infty}^{+\infty}f(x,y) \,dxdy


enter image description here

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