I can open my notebook but when i write, for example, x+2 = 5 I can't see on the left any " in[]= " and when i click enter the notebook doesn't show me anything (i can't see the " Out[]= ".
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$\begingroup$ Under the option "Palettes", then "Writting Assistant", then under Writing and Formatting / Notebook properties and actions go to "Content" and select "Cell Labels: Show/Hide". I think with that you should be able to see again the In[] and Out[] 's in your notebook. $\endgroup$– Mauricio FernándezJan 3, 2017 at 12:29
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$\begingroup$ nope, i can see "in[]" and "out[]" but after i have written all my stuff. What i wolud like to see is shown in this video:youtube.com/…. As you can see on the left appear "In[]=" and "Out[]=" after he has written something $\endgroup$– FedericoJan 3, 2017 at 12:45
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$\begingroup$ also a can't see resoults like this "ArrayPlot[{{1, 0, 0, 0.3}, {1, 1, 0, 0.3}, {1, 0, 1, 0.7}}]". I write it but when I click enter appear nothing $\endgroup$– FedericoJan 3, 2017 at 14:23
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1$\begingroup$ are you pressing enter only, or shift+enter? $\endgroup$– Mauricio FernándezJan 3, 2017 at 14:27
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1$\begingroup$ I have tried with shift+enter and it works ! Thank you ! ( it's the first time that I use Mathematca and I don't konw a lot) $\endgroup$– FedericoJan 3, 2017 at 14:35
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1 Answer
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Try "Shift+enter".
One single "Enter" just mean a new line in Mathematica notebook, but "Shift+Enter" means run the code you input in the cell.
