Math question--hello, ![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
fivemack
This is, I think, more technicality/terminology than anything. One of my fellow editors ran into this:
Is y-0 [equivalently, f(x)=0] a function that is symmetric with respect to the x-axis?
It seems to me and her that it is, but a site she often finds reliable claims that there are no such functions.
[Note: this is a technical point, not that she and I have forgotten how to graph simple curves: y=x2 is a function, but x=y2 is not a function but a relation.]
ETA: Thank you all. Within a couple of hours, I was able to go back to Marta and tell her that I'd had responses from people I trusted, including a Ph.D. mathematician, and she and I were right and the web site was wrong. When she first asked me, after lunch, she wasn't going to consult her usual source because the manuscript is due Monday.
Is y-0 [equivalently, f(x)=0] a function that is symmetric with respect to the x-axis?
It seems to me and her that it is, but a site she often finds reliable claims that there are no such functions.
[Note: this is a technical point, not that she and I have forgotten how to graph simple curves: y=x2 is a function, but x=y2 is not a function but a relation.]
ETA: Thank you all. Within a couple of hours, I was able to go back to Marta and tell her that I'd had responses from people I trusted, including a Ph.D. mathematician, and she and I were right and the web site was wrong. When she first asked me, after lunch, she wasn't going to consult her usual source because the manuscript is due Monday.
no subject