Full course on Graphs: https://unacademy.com/lesson/understanding-function-domain-and-restricted-domain-using-graph-in-hindi/X0VB4721/
Complete course to Master Trigonometry: https://unacademy.com/lesson/basics-of-trigonometry-in-hindi/LT72YVD9/
Full Course on Limits
Link to my Unacademy Profile: https://unacademy.com/user/AshishBajpai
There are more than 1000 lectures on Unacademy so dont miss it, and it is all free. Remember to follow me on Unacadmey for regular updates on many more new courses.