Somewhere between a bug or feature:
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12-12-2016, 09:53 PM
Post: #11
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RE: Somewhere between a bug or feature:
(11-14-2014 05:18 PM)Han Wrote: Here's how I understand the where function (now). I think the problem is that the calc. doesn't see b:=x^2 as a function, but only as an expression: 1. if you define b:=x^2, b is an expression not a function and b|x=2 --> 4 2. if you do a+b|x=2 --> x^2+a, but subst(a+b,x=2)--> a+4 because subst is for expressions. 3. if you do a+(b|x=2) --> a+4, correct answer. 4. if you define b(x):=x^2, define b as function, writing a+b(x)|x=2 --> a+4, but for functions the easier way is just to write a+b(2) --> a+4 So, when you write b:=x^2 the calc. does not see it as a function, but as an expression. You should use subst or enclose the expression in the parenthesis, in this case 'b|x=2' and all will be well. I think. |
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Messages In This Thread |
Somewhere between a bug or feature: - DrD - 11-13-2014, 05:52 PM
RE: Somewhere between a bug or feature: - Han - 11-13-2014, 09:59 PM
RE: Somewhere between a bug or feature: - DrD - 11-14-2014, 12:35 PM
RE: Somewhere between a bug or feature: - Han - 11-13-2014, 10:43 PM
RE: Somewhere between a bug or feature: - Mark Hardman - 11-13-2014, 11:31 PM
RE: Somewhere between a bug or feature: - Han - 11-14-2014, 12:41 AM
RE: Somewhere between a bug or feature: - parisse - 11-14-2014, 07:27 AM
RE: Somewhere between a bug or feature: - Han - 11-14-2014, 05:18 PM
RE: Somewhere between a bug or feature: - John P - 12-12-2016 09:53 PM
RE: Somewhere between a bug or feature: - DrD - 11-14-2014, 05:58 PM
RE: Somewhere between a bug or feature: - Jan_D - 12-12-2016, 11:31 AM
RE: Somewhere between a bug or feature: - Han - 12-13-2016, 12:02 AM
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