http://www.mapleprimes.com/questions/128350-How-Do-I-Find-The-Unknown-X-When-I-Know-Y en-us 2026 Maplesoft, A Division of Waterloo Maple Inc. Maplesoft Document System Thu, 11 Jun 2026 01:02:28 GMT Thu, 11 Jun 2026 01:02:28 GMT The latest answers and comments added to the Question, How do I find the unknown X when I know Y? http://www.mapleprimes.com/images/mapleprimeswhite.jpg http://www.mapleprimes.com/questions/128350-How-Do-I-Find-The-Unknown-X-When-I-Know-Y http://www.mapleprimes.com/questions/128350-How-Do-I-Find-The-Unknown-X-When-I-Know-Y?ref=Feed:MaplePrimes:How do I find the unknown X when I know Y?:Comments#answer128353 <p>Depending upon the exact way that the function f is defined, you could probably use something like:</p> <p>solve( f(X)=Y, X )</p> <p>If f is the solution to a differential equation, you might want to use the event handler that is provided within dsolve to help with your case. My suggestion is to take a look at the online help for solve and dsolve to see if you can find something similar to what you are trying to do.</p> <p>Good luck!</p> <!--break--> <p>Doug</p> <pre>--------------------------------------------------------------------- Douglas B. Meade &lt;&gt;&lt; Math, USC, Columbia, SC 29208 E-mail: mailto:meade@math.sc.edu Phone: (803) 777-6183 URL: http://www.math.sc.edu </pre> <p>Depending upon the exact way that the function f is defined, you could probably use something like:</p> <p>solve( f(X)=Y, X )</p> <p>If f is the solution to a differential equation, you might want to use the event handler that is provided within dsolve to help with your case. My suggestion is to take a look at the online help for solve and dsolve to see if you can find something similar to what you are trying to do.</p> <p>Good luck!</p> <!--break--> <p>Doug</p> <pre>--------------------------------------------------------------------- Douglas B. Meade &lt;&gt;&lt; Math, USC, Columbia, SC 29208 E-mail: mailto:meade@math.sc.edu Phone: (803) 777-6183 URL: http://www.math.sc.edu </pre> 128353 Sun, 04 Dec 2011 09:29:34 Z Doug Meade Doug Meade http://www.mapleprimes.com/questions/128350-How-Do-I-Find-The-Unknown-X-When-I-Know-Y?ref=Feed:MaplePrimes:How do I find the unknown X when I know Y?:Comments#comment128355 <p>thanks for this fast reply!</p> <p>&nbsp;</p> <p>ive already tried it with solve(f(x)=Y,x), but it gives me an explicit answer with RootOf and a coefficient _Z...</p> <p>therefore i need an &nbsp;implicit answer so i can use it further.</p> <p>&nbsp;</p> <p>im sure its easily done, i just cant figure it out!</p> <p>should i give you my maple sheet?</p> <p>thanks for this fast reply!</p> <p>&nbsp;</p> <p>ive already tried it with solve(f(x)=Y,x), but it gives me an explicit answer with RootOf and a coefficient _Z...</p> <p>therefore i need an &nbsp;implicit answer so i can use it further.</p> <p>&nbsp;</p> <p>im sure its easily done, i just cant figure it out!</p> <p>should i give you my maple sheet?</p> 128355 Sun, 04 Dec 2011 10:23:02 Z mark2710 mark2710