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Contents of this Calculus 2 episode:
Convergence test, Partial sums, Sequence of partial sums, N-th term test for divergence, Leibniz-type series, Absolutely convergence, Root test, Ratio test.
It is very well priced and better and more understandable than many private tutors.
It makes sense, it's fun, it's worth all the money.
Ingenious to learn any math.
My seventh-grader brother learned to derive, which is quite an evidence that it is explained clearly.