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How to clear the previous input

Posted 5 months ago
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I input a function y’[x] in input 26 When i want to solve a differential equation, I entered y’’[x]-3y’[x]+2y=0 in input 27. However, the system shows invalid argument as it considered the input 26 as the y’[x] in input 27 How can i do so? Please help me with that.

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Welcome to Wolfram Community! Please make sure you know the rules: https://wolfr.am/READ-1ST
Your post is too vague. Please describe your subject extensively providing the code.

You can format the code in this way:-

int = Integrate[1/(x^3 - 1), x];
Map[Framed, int, Infinity]

You can also embed notebook or attach notebook.

enter image description here

Posted 5 months ago

Check out Remove[].

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