@tomleslie 

OK, I will keep in mind with theses difference ,thank you!

@Thomas Richard 

Yes,the two methods are all working,thanks very much!

@tomleslie invPlot2.mw does not work on my pc,

My system is win10 64bit Pro 21H2,installed directiory "D:\Program Files\Maple 2022"

All the worksheet you attched do not work on my pc,so I think is it installation problem or system problem?

IsTrigProc_Error.mw

Sorry,I could't upload the mw document ,I don't know why,I have a screenshot

@tomleslie I use Maple 2022.

The Trigonometric functions with the same error when executing the command, but polynominal functions are ok like x^2.