Can't test your math work? That's just completely false. The process is the test. Does each step make sense. Lower level math books include answers which will g

Can't test your math work? That's just completely false. The process is the test. Does each step make sense. Lower level math books include answers which will give you confidence the procedure was correct but no way ensures it. At a higher level, it changes to proofs where again, it doesn't matter if you know something is true or false, as long as each intermediate step it true. Of course, I'm not going to suggest that learning math solely from a book is optimal (neither is learning programming from a book), but it certainly isn't impossible.