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How to plot this system of equations?

enter image description here

This do not work:

enter image description here

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closed as off-topic by corey979, Bob Hanlon, Henrik Schumacher, Coolwater, Carl Lange May 19 at 20:27

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question arises due to a simple mistake such as a trivial syntax error, incorrect capitalization, spelling mistake, or other typographical error and is unlikely to help any future visitors, or else it is easily found in the documentation." – corey979, Bob Hanlon, Henrik Schumacher, Coolwater, Carl Lange
If this question can be reworded to fit the rules in the help center, please edit the question.

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f[x_] = Piecewise[{{-1, x <= -1}, {x, -1 < x < 0}, {x^2, x >= 0}}]

Plot[f[x], {x, -1, 10}]
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  • $\begingroup$ Can you help me also knowing how to make the input using the { as it is shown in the top of the question? I mean, how can I input the "kind of" matrix" By default in the "special character section" appears an option 2x2 (Typographic composition section) there are shortcuts for expanding the rows and columns but they do not work correctly. And I am working on Mac so shortcuts do not work either. $\endgroup$ – Haizum Skallah May 19 at 16:47
  • $\begingroup$ @HaizumSkallah Ask this as a new question. $\endgroup$ – zhk May 19 at 16:49

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