Hello dear student,

There are many books online that you can check for indefinite integration in the regional language which is Telugu. here I am mentioning the name of few books that you can refer to strong your concepts in indefinite integration or  to understand indefinite integration. The name of the books are -

Inter ll mathematics llB . Question bank

The power of vedic maths

While you can also go on YouTube and check for the videos teaching indefinite integration in Telugu.

I hope the above provided information is helpful for you.

Thank you