The textbook, Mathematics for the Physical Sciences by Leslie Copley, which costs $100+ in a hardcover edition, is FREE for Kindle. This was the author's intent. From the Foreword:

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It was always my intention to make the book freely accessible through posting on the internet. 

 

That price for a  physical book is to be expected when it's not massively popular. 

I like that the book starts with complex analysis. And I like the no-nonsense style. For comparison, the style of A. Zee's books is repulsive to me.

This is a very good book, I have been working with it for a long time.

Edited April 12, 20223 yr by Roscoe G. Little

I'd like to but i am unable to do basic  x table  at the moment  but i am thinking of going back to College to try and to learn  and  get  help from  learning support