I used it for this during my PhD: https://github.com/rpep/fmmgen https://github.com/rpep/fmmgen and found it very powerful. I have in the past used Mathematica

I used it for this during my PhD: https://github.com/rpep/fmmgen https://github.com/rpep/fmmgen and found it very powerful. I have in the past used Mathematica, which I did think was more powerful for symbolic math to be honest, but it had the downside of not being free...!