Calculators Having problem with using ti-89 titanium solving integral problem

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The issue discussed involves a user experiencing problems with their TI-89 calculator, specifically receiving a matrix output instead of the expected integral result. The solution identified is that the variable 'x' was likely defined as a matrix, causing the incorrect output. Clearing the variable 'x' or using a different variable is recommended to resolve the issue. The user successfully resolved the problem by resetting the calculator, which restored functionality.
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I just bought my ti-89 Ti
Please help me with this problem.
I can't get the right integral, instead I get a matrix look output.
Check the picture I attach to this post, then tell me what I should do to have the right answer.

Thank You
 

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My guess is that you have 'x' defined as a matrix right now. You need to clear 'x', or use a different variable.
 
Thank You, I don't know how to clear 'x', but I just reset my calculate, so everything works fine now.
 
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