Aug
12
comment Diophantine inequality that comes up after Vieta Jumping Hurwitz technique
not quotation marks, but semicolon. On my Windows notebook I can use the Alt Numpad input method to produce "ö" bei pressing directly "[Alt]+148". [Alt] is the left Alt-key, 148 must be typed on the numeric keypad. This works in comments, too. These codes work for me: en.wikipedia.org/wiki/Code_page_437#Characters
Aug
12
comment Diophantine inequality that comes up after Vieta Jumping Hurwitz technique
One can use the html technic: "ö" is written as "ö" or "ö". This works in questions and answers but not in comments. de.selfhtml.org/html/referenz/zeichen.htm#benannte_iso8859_1
Aug
12
reviewed Approve suggested edit on How do I solve $\vert x\vert^{x^2-2x} = 1$?
Aug
12
comment Archimedes' Apprxomation of Square Roots
the second sequence does not give only lower bounds. Starting with $x_1=x_2=\frac{5}{3}$ one gets: "lower bound","lower bound","upper bound","lower bound","lower bound","upper bound",...
Aug
12
revised Archimedes' Apprxomation of Square Roots
changed one formula, probably TeX error
Aug
12
revised Sphere equation given 4 points
added 165 characters in body
Aug
12
revised Sphere equation given 4 points
typo
Aug
12
answered Sphere equation given 4 points
Aug
12
revised Question on interest
format, tag
Aug
11
reviewed Approve suggested edit on Finding the equation of the tangent line at a point
Aug
11
comment Prove that $f(a) \leq f(x) \leq f(b) $
There is something missing: $f'(x) ≥ ?$
Aug
11
answered Complex Numbers Closed under division?
Aug
11
comment What's the probability of third coin being of 50 cent?
You can put the mouse pointer over a formatted text ( like $x^2+y^2$ ) and select "Show Math As -> TeX Commands" from the context menue (right mouse button) to get the TeX source of of an expression.
Aug
10
revised Algorithms for factoring multivariate polynomials
format and typos: removed a [ and *
Aug
10
reviewed Approve suggested edit on Exponential function, multivariable calculus
Aug
10
awarded  Tumbleweed
Aug
10
comment Solve the equation $(x^2-9)+\sqrt{2-x}=0$
Your "5." is right. But I don't see any sense in splitting $(x^2-9)$ to $(x+3)(x-3)$. Such unnecessary calculations can give rise to calculation errors that simlply can be avoided by avoiding such calculations.
Aug
10
comment Sequential Algebraic Problem:
I don't like the upload of pictures instead of text. Pictures are not searchable, text of pictures cannot be copied and pasted, the size of the font cannot be changed. Pictures can be removed from the server. Your picture does not bring any additional infomation So why do you not post text? meta.math.stackexchange.com/questions/1805/…
Aug
10
awarded  Informed
Aug
10
comment $\left | -(x+2)^2+6(x+2) \right |>13$
related to math.stackexchange.com/questions/892613/…