"Find" function outputs fractions
"Find" function outputs fractions
(OP)
how do I output in decimal form?
Thanks!
Thanks!
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"Find" function outputs fractions
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RE: "Find" function outputs fractions
TTFN
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RE: "Find" function outputs fractions
I'm fairly new to MathCad. Where do you suggest I place the word, "float"?
RE: "Find" function outputs fractions
Second, for numerical problems, you need to provide guess values for ALL of the unknowns.
Third, M14 does not like mixed units in the solution, and you'll have to normalize the units in the Find, and add them back later. It's a PITA, but that's the way it is.
See attached: http://fi
TTFN
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RE: "Find" function outputs fractions
-I actually followed a Mathcad "solve block" or "find" help example which indicated that the way I setup this program(using <CTRL> + . arrow) does NOT require ANY guess values for the 5 unknowns. Of course I cannot not find the document now to show you....
-When you say "normalize the units", do you mean simply delete them all and add in after I get the solution? Again, Mathcad seems to be solving thru with proper units....
-I think you MAY be misinterpretting how I setup the problem. Yes, I did assign numerical values to a slew of variables that act as constants in the 5 eqns, but the 5 unknowns have no numerical assignments, thus I think using symb = is ok based on my reading thru MathCad help, etc....I also tried running this with regular = and is would not even solve...
MAthCad Help(Symbolic Equal Sign) says:
"Example:
To evaluate the expression x2·x3 + 5x + 3x − 6 + 4, type the expression and then:
Press [Ctrl] [.] to insert the symbolic equal sign after the expression, or click → on the Symbolic toolbar.
x2·x3 + 5x + 3x − 6 + 4 →
Click outside the expression or press [Enter]. The result appears to the right of the arrow.
x2·x3 + 5x + 3x − 6 + 4 → x5 + 8x − 2
Mathcad simplifies the expression by performing arithmetic and combining like terms. Note that you cannot evaluate this expression using the numerical equal sign, because the variable x does not have an assigned value. To evaluate it, you must use the symbolic equal sign.
To perform more complicated symbolic operations such as factoring or expanding an expression, you can insert a keyword before the symbolic equal sign."
Thanks again for your time. Any feedback is appreciated.
-Greg
RE: "Find" function outputs fractions
I definitely am interested to figure out if my program is FUBAR.
Any feedback is certainly valued.
Thanks
RE: "Find" function outputs fractions
TTFN
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RE: "Find" function outputs fractions
I deleted all units and it still solves with same numerical outputs, except now there are no units.
Do you still believe my use of the "find" function with symbolic = and no initial guess is errant?
RE: "Find" function outputs fractions
To go without units is dangerous and unnecessary, particularly since you are not actually solving a symbolic problem, you're doing a numeric problem.
You're after a numeric solution, and there appears to be no desire to see the actual algebraic solution, so why use the symbolic processor that doesn't do units?
TTFN
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RE: "Find" function outputs fractions
Any idea what is causing the "a name is required error message and the cause of left side of four equations turning red?
thanks!
RE: "Find" function outputs fractions
A solve block is supposed to find the solution to a set of constraints.
TTFN
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RE: "Find" function outputs fractions
Is this what you meant when you mentioned normalizing the find function ?
RE: "Find" function outputs fractions
TTFN
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