what is the wrong here

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jake carl
jake carl 2020 年 12 月 24 日
回答済み: Cris LaPierre 2020 年 12 月 24 日
(dy/dx=(1+4*t)*sqrt(y)

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回答 (2 件)

Image Analyst
Image Analyst 2020 年 12 月 24 日
You never assigned any values to t before you tried to use t. What values do you think/expect/want t to have? You have to assign them to t first.
Cris LaPierre
Cris LaPierre 2020 年 12 月 24 日
Do you realize your screenshot has nothing to do with the code you've shared?
  • You are not using a valid variable name
  • Your screenshot shows you are trying to use a variable you have not defined (clearly stated in the red error message)

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