http://www.mapleprimes.com/questions/35536-Cannot-Insert-Nummeric-Value-Of-Variable en-us 2026 Maplesoft, A Division of Waterloo Maple Inc. Maplesoft Document System Tue, 09 Jun 2026 18:34:09 GMT Tue, 09 Jun 2026 18:34:09 GMT The latest answers and comments added to the Question, Cannot insert nummeric value of variable assumed real http://www.mapleprimes.com/images/mapleprimeswhite.jpg http://www.mapleprimes.com/questions/35536-Cannot-Insert-Nummeric-Value-Of-Variable http://www.mapleprimes.com/questions/35536-Cannot-Insert-Nummeric-Value-Of-Variable?ref=Feed:MaplePrimes:Cannot insert nummeric value of variable assumed real:Comments#answer44209 <p>Applying an assumption to a variable creates an assignment that assigns a new variable (theta~) to the original variable (theta). However, the left side of a Maple assignment is not evaluated, so</p> <pre> &nbsp; theta := 0 </pre> <p>assigns a new value to theta that replaces the theta~.&nbsp;&nbsp; There are two way around this.&nbsp; One is to use the assign procedure to assign the value:</p> <pre> &nbsp; assign(theta,0); </pre> <p>That works because theta is evaluated (to theta~) before the assignment is made. The alternative---my preference---is to avoid assigning to the variable and use eval:</p> <pre> &nbsp; eval(A, theta=0); </pre> <p>Applying an assumption to a variable creates an assignment that assigns a new variable (theta~) to the original variable (theta). However, the left side of a Maple assignment is not evaluated, so</p> <pre> &nbsp; theta := 0 </pre> <p>assigns a new value to theta that replaces the theta~.&nbsp;&nbsp; There are two way around this.&nbsp; One is to use the assign procedure to assign the value:</p> <pre> &nbsp; assign(theta,0); </pre> <p>That works because theta is evaluated (to theta~) before the assignment is made. The alternative---my preference---is to avoid assigning to the variable and use eval:</p> <pre> &nbsp; eval(A, theta=0); </pre> 44209 Thu, 11 Mar 2010 21:14:26 Z Joe Riel Joe Riel http://www.mapleprimes.com/questions/35536-Cannot-Insert-Nummeric-Value-Of-Variable?ref=Feed:MaplePrimes:Cannot insert nummeric value of variable assumed real:Comments#answer44210 <p>Hi Joe </p> <p>Thank you for your answer. </p> <p>Regards Brian</p> <p>Hi Joe </p> <p>Thank you for your answer. </p> <p>Regards Brian</p> 44210 Thu, 11 Mar 2010 21:30:30 Z BrianB BrianB