com.github.gbenroscience:parser-ng (maven): Rich and Performant, Cross Platform Java Library(100% Java)... Now allows the differentiation function to be differentiated with respect to any variable(not just x). A command line tool(parser.cmd.ParserCmd) has also been added. Its still in its infancy; but it works
Keywords: calculus|equation|java|math-expressions|math-library|math-parser|math-parser-library|mathematics|mathparser|matrix|matrix-calculations|matrix-multiplication|matrix-subtraction|parser|parsing|statistics