How to typeset the following math formula?

I just can't do that beautifully

  • 1
    Welcome to the site TeX.SE. The tag latex3 is not very correct. – Sebastiano Oct 27 '18 at 9:58
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    Note this is Q&A site, not a please do this for me service. What do you have so far. – daleif Oct 27 '18 at 10:50
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    Search for \rcases and \left\} in latex – nidhin Oct 27 '18 at 10:54
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    Can you please choose a title that describes your problem? In its current form it won't help any future users of this site who might have the same problem as you. – user36296 Oct 27 '18 at 14:06

You should try



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