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Is it possible to substitute values into an equation without evaluating the result so a student can see the equation with the numbers substituted in each location (like you would if you were doing it by hand)?

Matt

It's not possible right now, but it could be. Maybe adding quote as optional last argument?

I don't understand "last optional argument". Could you give an example?

subst(sin(x),x=pi,quote)
would return sin(pi) instead of 0.

I get 0, the same as without quote. I may have a config setting wrong.

Matt

It's not yet in the binaries.

Ok, great. I will check later.

Thanks,
Matt

Hi, why is the following statement not returning 'y+x+x'?

subst(a+b,[a = (y+x),b = x],quote)

It does if autosimplification is off.

By the way, thank you very much for this addition to subst. I use it extensively (with autosimplify off). It makes my derivations for class much more understandable.