If you think that you are sufficiently familiar with the course contents, you are encouraged to appear for a Drop Test. The test will be in the second or third week of the course, the date will be announced in the class.
The questions in the Drop Test will be at the level of problems in Arfken. It will be Open Book and Open Notes (No sharing of books / notes allowed).
If you clear the test, you will have the option of getting the credit for the course (with the grade in the test as the course grade) without having to attend any more lectures, submit assignments or appearing for exams.
If you do not clear the test, it will not go into any official records and the course will continue.
Here is the question paper for the Drop Test.