28KiB, 186x208, confused.png View SameGoogleiqdbSauceNAO Anonymous Thu 18 Jun 14:41:06 2020 No.11811426 ViewReplyOriginalReport Quoted By: >>11811432 >>11812706 If f(x,y)=\sqrt{x^2+y^2}, is f((a,b)x(c,d))=(\sqrt{a^2+c^2},\sqrt{b^2+d^2})?
