Odesolve is a numerical method. You have to provide values for the unknown variables A, B, A9, ymax, N, etc, and you have to define the unknown function V6.
EDIT: I just noticed that you seem to ask question but constantly you don't come back to comment on the answers you got and you don't close your threads. Thats considered really bad manners ... 😞
I am sorry for not responding to the threads was caught up in work and did not knew the procedure. I have corrected my mistake. After adding the values as you suggested it still gives the same error
