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Given/Find function is telling me there isn't a solution when there is...

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Given/Find function is telling me there isn't a solution when there is...

Hi,

So, I'm trying to use the given/find function to find the temperature of a substance at a given pressure. I have my equation for pressure as a function of temperature. I can type values in manually to get really close to what I'm looking for, but MathCAD keeps telling me there is no solution. The area of question is highlighted in blue.

Thanks,

Sam

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Given/Find function is telling me there isn't a solution when there is...

Strange - I don't understand why I get a slution (a complex one).

The cause for your problem is:

.) if you use symbolic evaluation you must not provide a guess value, the variable searched for has to be without value

.) if you use numeric evaluation it works as you had it set up

Find_symb1.png

Find_num1.png

View solution in original post

4 REPLIES 4

Re: Given/Find function is telling me there isn't a solution when there is...

Strange - I don't understand why I get a slution (a complex one).

The cause for your problem is:

.) if you use symbolic evaluation you must not provide a guess value, the variable searched for has to be without value

.) if you use numeric evaluation it works as you had it set up

Find_symb1.png

Find_num1.png

View solution in original post

Re: Given/Find function is telling me there isn't a solution when there is...

Thanks. I know I typed that in at some point and it wasn't working for me, but I guess I didn't have something else set up properly. I feel like I'm finding every way for the program not to work.

Re: Given/Find function is telling me there isn't a solution when there is...

I feel like I'm finding every way for the program not to work.

If thats true, you still will have a long way to go 😉

Re: Given/Find function is telling me there isn't a solution when there is...

I'm sure. lol

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