Objects in image: Bookcase, Book
Text visible in image: CALCULUS, Server, XML, EMPVIEINLN, UNDEON, e, Java, 1.2, 1.2I, Java, VISUAL, BASIC, ER-DESIGN, HTMI, XML, InPlain, Cookbont, Applicati, DREAMWEAVER, 3, SI, Telandh, Mastering, EJB, Ifuse, NTARNG, PEER, IG!l, Hia!, DATABASE, SYSTEMS, Practica, UNIX®, MySQL, Uhe, Software, Apache, Engineering
Question: what subject is the top textbook on the right about?
Answers: calculus, algebra, cmode, calculus, calculus, calculus, calculus, calculus, unanswerable, calculus