HP-Prime CAS versus TI-CAS (TI68k & TI-nspire)
01-10-2017, 08:05 PM (This post was last modified: 01-11-2017 03:03 AM by compsystems.)
Post: #1 compsystems Senior Member Posts: 1,312 Joined: Dec 2013
HP-Prime CAS versus TI-CAS (TI68k & TI-nspire)
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Why do I consider the HP-Prime CAS better than the TI-CAS (TI68k & TI-nspire)?

1: because it allows me to better manipulate algebraic expressions, observing intermediate steps. Ideal for creating step-by-step programs without having to create subroutines or conversion to strings to show intermediate steps

(Although if the HP-Prime CAS did not rewrite some of the expressions would be much better), It is customary to see on mathbook, the inequalities, the numbers to the right side and the symbolic expressions to the left side.
0 > (x ^ 2 + x-6) ==
(x ^ 2 + x-6) < 0

Graphic comparison Code comparison
HP-PRIME CAS
PHP Code:
#cas    testInequality1():=    begin     local expr0;     print;     print("step1:");     expr0 := '(3*x^2-2*x-2) < (2*x^2-3*x+4)';     //expr0 :=  (3*x^2-2*x-2) < (2*x^2-3*x+4);     print(string(expr0));      print("");     print("step2: +(-2*x^2)");     expr0 := expr0 + -2*x^2;     print(string(expr0));      expr0 := simplify(expr0); // Requires a sentence more of simplification.     print("simplify → " +expr0);     print("");     print("step3: +(3*x)");     expr0 := expr0 + 3*x;     print(string(expr0));      expr0 := simplify(expr0);      print("simplify → "+expr0);     print("");     print("step4: +(-4)");     expr0 := expr0 + -4;     print(string(expr0));      expr0 := simplify(expr0);      print("simplify → "+expr0);     print("");     return expr0;       end;#end

TI-CAS
PHP Code:
// ti68kinequali()Prgm Local expr0 ClrIO Disp "step1: " 3*x^2-2*x-2 < 2*x^2-3*x+4 → expr0 Disp expr0 Disp "step2: +(-­2*x^2)" expr0 + ­2*x^2 → expr0 Disp expr0 Disp "step3: +3*x" expr0 + 3*x → expr0 Disp expr0 Disp "step4: +(-­4)": Pause expr0 + -­4 → expr0 Disp expr0EndPrgm

Disadvantages, does not handle simplifying operations and others on inequalities.

I would like to know your options
Why do you consider that one is better or the other?
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