my internet is not working on ipad after updating ipad to 9.3

You are saying that your device is connected to the internet. What makes you say that when you then say the internet is not working? You are connected to your wi-fi, but cannot access the internet? Is that a better assessment of the situation?

Is this your home wi-fi, or someone else's wi-fi network? Is it just that you cannot access Safari, or have you attempted to access Mail or other internet based resources? What troubleshooting steps have you tried with the iPad? To start out with, try restart, reset. You can also try forgetting the network on your iPad and adding it back again.

Then please try and explain your problem with a little more detail. Is it as I described partially earlier? You need to provide more information about the issue. "The internet is not working" does not say much.

Okay, if you look at your wi-fi network on the phone, does it appear that all of the settings are populating? Do you have all of the IP addresses and all? Do you use anything else on this wi-fi, a computer, etc.? Have you tried rebooting your modem or router, wherever you are receiving the wi-fi from? Have you attempted to connect to another public wi-fi, such as Starbucks or other coffee shop, local library, or other wi-fi source? Have you tried to connecting to wi-fi at work, if you have this capability? Does it work in any of those situations? If not, go to Settings>General>Reset>Reset Network Settings. Understand, this will delete all known wi-fi network passwords. You will have to enter them again, but it will clear that area out and allow you to reset those settings.

You refuse to answer a bunch of questions and keep repeating "internet is not working". You aren't going anywhere until you start troubleshooting the problem. No one can help you if you keep repeating what you already said.