Nov
19
reviewed Reject Round table seating logic question.
Nov
19
reviewed Approve Roll a fair die until a 6 appears for the third time. What is the chance that all six values have occurred?
Nov
19
reviewed Approve Equation to zero confused
Nov
19
answered What is indefinite integral actually - $\int f(x)dx$ or $\int_a^x f(t)dt$?
Nov
19
comment What is indefinite integral actually - $\int f(x)dx$ or $\int_a^x f(t)dt$?
Does your book (which book?) really say it is a family of equations? I think it should say it is a family of functions.
Nov
18
revised Logarithmic Equation: Solve for $x$
latex
Nov
18
revised Theorem 2.4-3 in Kryszeg's *Introductory Functional Analysis with Applications*
changed Erwine Kryszeg to Erwin Kreyszig
Nov
17
reviewed Approve Show that H is a normal subgroup of G.
Nov
17
comment Union of Two Rectangles is the Disjoint Union of at most $6$ Rectangles
Can you show an example for $X = \mathbb R \times \mathbb R$ where 6 rectangles are needed?
Nov
17
comment Does $a\ln(x^2 +y^ 2 )+b$ satisfy Laplace’s equation?
your calculations are right and $F_{yy} = -F_{xx}$
Nov
17
reviewed Approve Does $a\ln(x^2 +y^ 2 )+b$ satisfy Laplace’s equation?
Nov
17
answered Factorize $999999$ into a product of irreducibles in $\mathbb{Z}[i]$ (clarification)
Nov
17
revised Factorize $999999$ into a product of irreducibles in $\mathbb{Z}[i]$ (clarification)
latex
Nov
16
revised Can a function that satisfies the condition $f''(x) = a \cos f(x) $ and $(f'(x))^2 = b \sin f(x)$ be found?
latex, tags for equations
Nov
16
reviewed Approve How to evaluate the integral $\int e^{x^3}dx $
Nov
16
comment Show that no linear polynomial divides $x^k + x^{k-1} + \cdots + 1$ with $k\ge 2$ even
$x^3+x^2+x+1=(x+1)(x^2+1)$
Nov
16
revised Show that no linear polynomial divides $x^k + x^{k-1} + \cdots + 1$ with $k\ge 2$ even
typo
Nov
16
answered Show that $A\cap B\subseteq A$ and $A\subseteq A\cup B$
Nov
16
revised Show that $A\cap B\subseteq A$ and $A\subseteq A\cup B$
latex
Nov
14
reviewed Reject Concavity of function $F(x)=x^{1/5}(x+6)$