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Inconsistency CAS vs. Home
10-16-2015, 02:12 AM
Post: #1
Inconsistency CAS vs. Home
In CAS, the integral of
((x+1)/(x^2+2*x)-(x+4)/(x^2+x)+(3/(x^2+3*x+2)) from -4 to 12 produces "undef". In HOME, it produces "Error: Invalid input"

Why the difference?

()'s in this thread for clarity.
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10-16-2015, 06:54 AM
Post: #2
RE: Inconsistency CAS vs. Home
(10-16-2015 02:12 AM)lrdheat Wrote:  In CAS, the integral of
((x+1)/(x^2+2*x)-(x+4)/(x^2+x)+(3/(x^2+3*x+2)) from -4 to 12 produces "undef". In HOME, it produces "Error: Invalid input"

Why the difference?

Did you remember to replace the x's (lowercase) with X's (uppercase) in Home? (You can't use undefined variables in Home like you can in CAS.) When I do that integral in Home, using X's, I get the same "undef" as in CAS.

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