Hello! I do all my math (and physics) work on the computer. I have a Windows 7 desktop computer, and it isn't very fast. In fact, it tends to freeze and slow down when running numerous programs, or one that runs a lot of processes. My TI-84 is usually faster than my computer. LOL
Do any of you know of a program (for Windows 7) that can allow me to do math work and scribblings? Right now, I'm using MS Paint, and it gets the job done, but I'm getting frustrated with its shortcomings. Here's a list of the features I would like.
1: Take a snip, and paste it in, resize it, or move it on the canvas. (MS Paint lets me do this.)
2: Invert the colors of a selection (MS Paint lets me do this, as well.)
3: Draw 2D shapes.
4: Write on the canvas with my USB writing pad.
5: Draw lines easily (by pressing a key or something to toggle line mode)
6: Lock graphics, so they can't be erased. E.G. Put my formulas in the canvas, lock them, then I can scribble all over , and delete my writing and have the formulas be unaffected. (can't do this in Paint)
I don't want to pay for software, so ideally it would be free.
Thank you!