If your answer differs, don't just correct it. Ask why the manual used a specific method—perhaps a certain matrix was "ill-conditioned," requiring a more stable algorithm. Finding the Right Manual
Before we proceed, a note on copyright. The official Instructor’s Solutions Manual for A First Course in Numerical Methods (ISBN: 978-0898719987) is legally restricted to faculty. First Course In Numerical Methods Solution Manual
SIAM (Society for Industrial and Applied Mathematics) occasionally releases a . Check the publisher’s website first. A legitimate purchase is worth the $30–$50 because the solutions are peer-reviewed. If your answer differs, don't just correct it
So, find the manual. But do not worship it. Use it to ask better questions: "Why did the author pivot at step 3?" "Why does the error plot curve upward after 20 iterations?" If your answer differs