You're looking for a helpful review of the 8th edition of "Circuitos Eléctricos" by Dorf and Svoboda, specifically the PDF solution manual (solucionario).
If you're using the 8th edition of "Circuitos Eléctricos" by Dorf and Svoboda, I highly recommend using the solucionario as a study aid. Just be sure to use it responsibly and in conjunction with the textbook, rather than relying solely on the solutions. solucionario circuitos electricos dorf 8 edicion pdf better
Here's a review that might help: