@Preben Alsholm 

May be it is my software problem,Iwill check again,thank you verymuch for helping me solve the problem.

sin.mws

@Preben Alsholm Thank you for your detailed guidance. I have solved the problems of H5 and H7, but there is something wrong with H6. I don't know what the problem is with H6.

@Preben Alsholm 

Thank you for help!I Open the program you just sent,but it can't run,I don't know whether it is the maple version.I use maple 2022.Can you run it?

Although the problem is not solved,thank you all the same.

Dear sir:
    Thank you very much for your help, I have solved my problem with the help of you.

                                                                                                      Best wishes,

                                                                                                    felixiao

Dear sir:
    Thank you very much for your help, I have solved my problem with the help of you.

                                                                                                      Best wishes,

                                                                                                    felixiao

@Preben Alsholm  Dear Preben lsholm: Thank you for your help, I really appreciate you.

@Preben Alsholm  Dear Preben lsholm: Thank you for your help, I really appreciate you.

@Preben Alsholm 

Thank you very much for helping me.

@Preben Alsholm 

Thank you very much for helping me.