Hi, Is there software that I can use while learning calc I-III? I dont need the software to give me the answers, but something that I can use to be able to manipulate formulas. Example. If I have to do a question in the textbook, I would have to write the integral and derivative formulas by hand while figuring out the answer. I want to be able to write what I usually would by hand on computer, but still do the math myself. Main reason is the have clean looking notes for when I go back to study for exams. Thanks, Ivan.