MaplePrimes - Questions and Posts tagged with float
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en-us2015 Maplesoft, A Division of Waterloo Maple Inc.Maplesoft Document SystemWed, 25 Nov 2015 20:19:12 GMTWed, 25 Nov 2015 20:19:12 GMTThe most recent questions and posts on MaplePrimes tagged with floathttp://www.mapleprimes.com/images/mapleprimeswhite.jpgMaplePrimes - Questions and Posts tagged with float
http://www.mapleprimes.com/tags/float
How to find the w and phi?
http://www.mapleprimes.com/questions/207077-How-To-Find-The-W-And-Phi?ref=Feed:MaplePrimes:Tagged With float
<p>1.</p>
<p>assume there are 3 real number or floating number a, b, c</p>
<p>how to find the w and phi in </p>
<p>a = sin(w*t1 + phi)</p>
<p>b = sin(w*t2 + phi)</p>
<p>c = sin(w*t3 + phi)</p>
<p>where w and phi are the same in above 3 equations, only different in t1, t2, t3</p>
<p> </p>
<p>2.</p>
<p>same as above , how to find w, apha and beta in below if there are a, b, c</p>
<p><span>a = alpha*cos(w*t) + beta*sin(w*t)</span></p>
<p><span>b = alpha*cos(w*t) + beta*sin(w*t)</span></p>
<p><span>c = alpha*cos(w*t) + beta*sin(w*t)</span></p><p>1.</p>
<p>assume there are 3 real number or floating number a, b, c</p>
<p>how to find the w and phi in </p>
<p>a = sin(w*t1 + phi)</p>
<p>b = sin(w*t2 + phi)</p>
<p>c = sin(w*t3 + phi)</p>
<p>where w and phi are the same in above 3 equations, only different in t1, t2, t3</p>
<p> </p>
<p>2.</p>
<p>same as above , how to find w, apha and beta in below if there are a, b, c</p>
<p><span>a = alpha*cos(w*t) + beta*sin(w*t)</span></p>
<p><span>b = alpha*cos(w*t) + beta*sin(w*t)</span></p>
<p><span>c = alpha*cos(w*t) + beta*sin(w*t)</span></p>207077Sat, 21 Nov 2015 03:14:39 Zasa12asa12 Exponents to floating point
http://www.mapleprimes.com/questions/204916--Exponents-To-Floating-Point?ref=Feed:MaplePrimes:Tagged With float
<p>Maple 15</p>
<p>eq:=1/2*x^(1/2) + 1/13*x^(1/3) + 1/26*x^(45/37);<br>evalf(eq);</p>
<p>The exponents are still fractions. I want to have floating point exponents.</p>
<p><br>0.5*x^0.500000 + 0.07692307692*x^0.333333 + 0.03846153846*x^1.216216216</p>
<p>How do I do this?</p>
<p> </p>
<p>Tom Dean</p><p>Maple 15</p>
<p>eq:=1/2*x^(1/2) + 1/13*x^(1/3) + 1/26*x^(45/37);<br>evalf(eq);</p>
<p>The exponents are still fractions. I want to have floating point exponents.</p>
<p><br>0.5*x^0.500000 + 0.07692307692*x^0.333333 + 0.03846153846*x^1.216216216</p>
<p>How do I do this?</p>
<p> </p>
<p>Tom Dean</p>204916Thu, 30 Jul 2015 05:15:06 ZThomas
DeanThomas
Deanhow to avoid the float(undefined)
http://www.mapleprimes.com/questions/203661-How-To-Avoid-The-Floatundefined?ref=Feed:MaplePrimes:Tagged With float
<p>Hello,</p>
<p>Good day.</p>
<p>How to avoid float(undefined) for v3, v4,v5 in this problem.</p>
<p>Thank you in advance.</p>
<p><a href="/view.aspx?sf=203661_question/Try_for_Second_Grade_Fluid.mw">Try_for_Second_Grade_Fluid.mw</a></p><p>Hello,</p>
<p>Good day.</p>
<p>How to avoid float(undefined) for v3, v4,v5 in this problem.</p>
<p>Thank you in advance.</p>
<p><a href="/view.aspx?sf=203661_question/Try_for_Second_Grade_Fluid.mw">Try_for_Second_Grade_Fluid.mw</a></p>203661Mon, 09 Mar 2015 01:26:42 ZtiratiraSolving for function of float
http://www.mapleprimes.com/questions/202411-Solving-For-Function-Of-Float?ref=Feed:MaplePrimes:Tagged With float
<p>To me the following behavior of solve is surprising:<br><br>restart;<br>solve(f(0.5)=7,f(0.5)); #Output NULL<br>solve(f(1/2)=7,f(1/2)); #Output as expected 7<br><br>Debugging solve suggested to me that the following might work<br>solve(f(0.5)=7,f(1/2));<br>and indeed it did (outout the float 7.).<br>This behavior seems to have started in Maple 10. I checked Maple V,R3 and several other old versions including Maple 9.5. All behaved as I would have expected. MapleV,R3 gave the float 7. in the first case, the other the integer 7.<br>I take this to be a bug and shall file an SCR.<br>Any comments?<br><br><br><br><br></p><p>To me the following behavior of solve is surprising:<br><br>restart;<br>solve(f(0.5)=7,f(0.5)); #Output NULL<br>solve(f(1/2)=7,f(1/2)); #Output as expected 7<br><br>Debugging solve suggested to me that the following might work<br>solve(f(0.5)=7,f(1/2));<br>and indeed it did (outout the float 7.).<br>This behavior seems to have started in Maple 10. I checked Maple V,R3 and several other old versions including Maple 9.5. All behaved as I would have expected. MapleV,R3 gave the float 7. in the first case, the other the integer 7.<br>I take this to be a bug and shall file an SCR.<br>Any comments?<br><br><br><br><br></p>202411Sun, 21 Sep 2014 12:16:40 ZPreben AlsholmPreben AlsholmEigenvectors of a big matrix
http://www.mapleprimes.com/questions/202191-Eigenvectors-Of-A-Big-Matrix?ref=Feed:MaplePrimes:Tagged With float
<p>Hi there</p>
<p>I have have a 18*18 matrix which almost each of its element are in symbolic form. Now I need to have all of its eigenvectors. Unfortunately when I use the "Eigenvalues()" function in maple i got nothing. In fact I got the error which comes below.</p>
<p><strong>Error, (in content/polynom) general case of floats not handled</strong></p>
<p>I need to know if there's a solution to eliminate the error? If not, what can I do to determine the eigenvectors and eigenvalues in symbolic form? </p>
<p><span class="mainBody document">I'll be appreciated your help</span></p><p>Hi there</p>
<p>I have have a 18*18 matrix which almost each of its element are in symbolic form. Now I need to have all of its eigenvectors. Unfortunately when I use the "Eigenvalues()" function in maple i got nothing. In fact I got the error which comes below.</p>
<p><strong>Error, (in content/polynom) general case of floats not handled</strong></p>
<p>I need to know if there's a solution to eliminate the error? If not, what can I do to determine the eigenvectors and eigenvalues in symbolic form? </p>
<p><span id="ctl00_MainContent_body" class="mainBody document">I'll be appreciated your help</span></p>202191Mon, 18 Aug 2014 15:39:20 ZsajjadsajjadSolving symbolic/numerical simultaneous equations? Could this be a bug?
http://www.mapleprimes.com/questions/201777-Solving-Symbolicnumerical-Simultaneous?ref=Feed:MaplePrimes:Tagged With float
<p>Hi,</p>
<p>I need to solve systems of numerical equations. I encountered a problem, where one of the parameters (tau[p3]) become FREE, see Maple worksheet attached.</p>
<p>That was clearly not expected.</p>
<p>I spent about 40 mintues to inspect what the problem is, eventually, I find that fsolve works perfectly.</p>
<p>Though fsolve would be the "first" choice for solving floating point problems. I really dont see why the simple "solve" syntax can not work. It is acting strange. And why is *tau[p3]* FREE, not the others?</p>
<p> </p>
<p>Could this be a bug? Or maybe is just WRONG to use solve?</p>
<p> </p>
<p>Casper</p>
<p><a href="/view.aspx?sf=201777_question/solve-fsolve.mw">solve-fsolve.mw</a></p>
<p> </p>
<p> </p><p>Hi,</p>
<p>I need to solve systems of numerical equations. I encountered a problem, where one of the parameters (tau[p3]) become FREE, see Maple worksheet attached.</p>
<p>That was clearly not expected.</p>
<p>I spent about 40 mintues to inspect what the problem is, eventually, I find that fsolve works perfectly.</p>
<p>Though fsolve would be the "first" choice for solving floating point problems. I really dont see why the simple "solve" syntax can not work. It is acting strange. And why is *tau[p3]* FREE, not the others?</p>
<p> </p>
<p>Could this be a bug? Or maybe is just WRONG to use solve?</p>
<p> </p>
<p>Casper</p>
<p><a href="/view.aspx?sf=201777_question/solve-fsolve.mw">solve-fsolve.mw</a></p>
<p> </p>
<p> </p>201777Thu, 12 Jun 2014 16:11:46 Zcasperyccasperyc