Mastering Engineering Fundamentals: The Guide to Microelectronic Circuits by Sedra & Smith (5th Edition)
For engineering students and hobbyists alike, is often considered the "Bible" of circuit design. Specifically, the 5th Edition remains a cornerstone in academic circles due to its balanced approach between theoretical rigor and practical application.
If your answer is wrong, use the manual to find the exact line where your logic diverged.