ZeroTest
✖
ZeroTest
is an option to various linear algebra functions that gives a function to use in testing whether symbolic expressions should be treated as zero.
Examples
Basic Examples (1)Summary of the most common use cases
The automatic ZeroTest used by LinearSolve does not detect that mat is non-singular:
https://wolfram.com/xid/0b8e723jb6-ny70c1
https://wolfram.com/xid/0b8e723jb6-w8azak
With a stronger zero test, LinearSolve gives the correct answer:
https://wolfram.com/xid/0b8e723jb6-obn5eb
Wolfram Research (1988), ZeroTest, Wolfram Language function, https://reference.wolfram.com/language/ref/ZeroTest.html (updated 2007).Text
Wolfram Research (1988), ZeroTest, Wolfram Language function, https://reference.wolfram.com/language/ref/ZeroTest.html (updated 2007).
Wolfram Research (1988), ZeroTest, Wolfram Language function, https://reference.wolfram.com/language/ref/ZeroTest.html (updated 2007).CMS
Wolfram Language. 1988. "ZeroTest." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2007. https://reference.wolfram.com/language/ref/ZeroTest.html.
Wolfram Language. 1988. "ZeroTest." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2007. https://reference.wolfram.com/language/ref/ZeroTest.html.APA
Wolfram Language. (1988). ZeroTest. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ZeroTest.html
Wolfram Language. (1988). ZeroTest. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ZeroTest.htmlBibTeX
@misc{reference.wolfram_2025_zerotest, author="Wolfram Research", title="{ZeroTest}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/ZeroTest.html}", note=[Accessed: 31-May-2025
]}BibLaTeX
@online{reference.wolfram_2025_zerotest, organization={Wolfram Research}, title={ZeroTest}, year={2007}, url={https://reference.wolfram.com/language/ref/ZeroTest.html}, note=[Accessed: 31-May-2025
]}