2013-09-10 06:21:37 -0600 received badge ● Taxonomist 2012-11-12 12:28:33 -0600 received badge ● Famous Question (source) 2012-01-16 01:43:38 -0600 received badge ● Notable Question (source) 2011-08-29 16:30:26 -0600 received badge ● Popular Question (source) 2011-04-11 13:45:35 -0600 received badge ● Good Question (source) 2011-04-11 10:27:39 -0600 commented answer Can sage compute the inverse of a function? Benjamin, thanks for this hint, very useful! 2011-04-11 10:26:07 -0600 received badge ● Supporter (source) 2011-04-11 10:26:06 -0600 received badge ● Scholar (source) 2011-04-11 10:26:06 -0600 marked best answer Can sage compute the inverse of a function? Here is a stupid method: var('x,y') f(x) = log(x) g(x) = solve(x == f(y), y)[0].rhs() print g  Here is a compilation from several scattered sources: Sage can compute the inverse of a power series. See: link:Reference Manual link:sage-support discussion link:trac #7644 (closed) Somebody once asked for the derivative of the inverse of a general symbolic function, but nobody could figure out how to find just the inverse: Mathematica has what you are looking for: link:InverseFunction 2011-04-11 10:26:05 -0600 commented answer Can sage compute the inverse of a function? Thank you Kelvin! Your 'solve' method works for me. As for the Mathematica method, by using Sage I hope to avoid having to pay for a Mathematica license. 2011-04-11 08:37:38 -0600 received badge ● Nice Question (source) 2011-04-11 08:02:37 -0600 received badge ● Student (source) 2011-04-11 06:41:14 -0600 asked a question Can sage compute the inverse of a function? Hello Sage community, is it possible to compute the inverse of a function in one variable with sage? So say I have f(x) = log(x)  and I want to compute f.inverse()  Thank you Paul