newRPL - build 1255 released! [updated to 1299]
12-20-2018, 01:29 AM
Post: #343
 The Shadow Member Posts: 233 Joined: Jan 2014
RE: newRPL - build 1089 released! [update:build 1127]
Wow. Nobody can say you aren't ambitious!

Okay, fine. I have no idea how to do the display stuff, though overline sounds good for vectors and matrices.

Sounds like we need commands RVAR and MVAR that set a variable to be real or matrix respectively? (Hopefully they work on lists.) Do we need a separate vector type? Do we need to distinguish between row and column vectors?

Claudio L. Wrote:Second digit (optional additional knowledge about the variable, these are bits):
When first digit is 0,1,2:
1 = value cannot be negative (>=0)
2 = value cannot be positive (<=0)
4 = value cannot be zero

While this makes good sense for reals, the first two make no sense for complex numbers. For those, it makes more sense to specify the quadrant, but I suppose you could just do the sign of the real part, which would be better than nothing.

I sort-of used the CAS to simplify Boolean expressions. What I actually did was use EVAL to simplify, then use A->L to convert the algebraic to a list, then strip out all exponents, then convert back to an algebraic. MUCH easier to do with RULEAPPLY, of course!

What exactly does RULEMATCH do?
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