If the book isn't freely available, I can suggest looking for open educational resources (OER) or similar textbooks that cover the same topics for free. There are platforms like OpenStax, OER Commons, and others where free textbooks are hosted. I can list some of those as alternatives.
Lastly, make sure to keep the language in Spanish since the original query was in Spanish. The user might have translated the search terms but still expects the response in the same language. Let me adjust that part. If the book isn't freely available, I can
First, I need to check if the book is freely available online. Many authors publish their work under Creative Commons or other open licenses. I'll search the publisher's website first. If that's not available, I'll check academic databases like Google Scholar or ResearchGate. Sometimes authors upload their books there. Lastly, make sure to keep the language in