ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Fri, 01 Mar 2013 15:55:42 +0100solving a simple equationhttps://ask.sagemath.org/question/9868/solving-a-simple-equation/Is there a method to solve the equation
x + x^(1/3) == -2 ?
Fri, 01 Mar 2013 15:13:46 +0100https://ask.sagemath.org/question/9868/solving-a-simple-equation/Answer by calc314 for <p>Is there a method to solve the equation
x + x^(1/3) == -2 ?</p>
https://ask.sagemath.org/question/9868/solving-a-simple-equation/?answer=14614#post-id-14614Here is a numerical approach. I've not been able to get it symbolically.
show(plot(x+ x/abs(x)* abs(x)^(1/3)+2,(x,-5,5)))
find_root(x+ x/abs(x)* abs(x)^(1/3)+2,-2,-1/2)Fri, 01 Mar 2013 15:43:54 +0100https://ask.sagemath.org/question/9868/solving-a-simple-equation/?answer=14614#post-id-14614Comment by czsan for <p>Here is a numerical approach. I've not been able to get it symbolically.</p>
<pre><code>show(plot(x+ x/abs(x)* abs(x)^(1/3)+2,(x,-5,5)))
find_root(x+ x/abs(x)* abs(x)^(1/3)+2,-2,-1/2)
</code></pre>
https://ask.sagemath.org/question/9868/solving-a-simple-equation/?comment=18124#post-id-18124Yes, this is right. This equation unsolvable in maple too, because of the third root of negativ numbers. But in Maple there is a surd function, which helps.Fri, 01 Mar 2013 15:55:42 +0100https://ask.sagemath.org/question/9868/solving-a-simple-equation/?comment=18124#post-id-18124