Implicit differentiation on HP Prime.

[Han]

(12-17-2013 05:34 AM)John P Wrote:  Thanks. I tried something similar but I could not solve for diff(y(x),x). I think results with diff(y(x),x) are pretty useless because you can't use them in farther calculations. I hope they will implement implicit differentiation i next ROM update.

Use subst() or convert the result into a string with STRING(). Then use REPLACE() and (to replace "diff(y(x),x)" with just "Yy" for example) and then convert back to a symbolic via EXPR() and continue with solving. Just make sure to add single quotes around the string before using EXPR(). You can probably automate this in a program.