This is what I'm studying every single day till the whole book is finished. My little challenge. Finishing chapter 4 now (relations) and about to start functions. Two chapters at a time. P. S. I print the chapter books for self study at work, and bind them at home with glue. https://t.co/nffJpYP2LX

This is what I'm studying every single day till the whole book is finished. My little challenge. Finishing chapter 4 now (relations) and about to start functions. Two chapters at a time. P. S. I print the chapter books for self study at work, and bind them at home with glue. https://t.co/nffJpYP2LX

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