I'm looking for a (hopefully cheap/free) software that could plot functions for academic use.
Until this point, I used MATLAB as a primary tool to draw graphs. Although it 'could' plot any functions I need, actually I feel it is often too tedious and time-consuming to make a nice-looking plot by manipulating scripts.
Something with a simple and formal UI and the capacity to draw implicit/parametric functions would be ideal. Also, I don't care spending a few dollars on good software; so any suggestions would be welcome(except i do care about hundreds of dollars so please leave out Mathematica) :)
Thanks in advance