4,777 reputation
21649
bio website non-existent
location United Kingdom
age 24
visits member for 2 years, 2 months
seen 18 hours ago

Oct
2
reviewed Approve Find equation of tangent line, derivatives
Oct
2
reviewed Approve How to prove that $A\setminus B = A\cap A^c$ ?
Sep
30
awarded  Explainer
Sep
28
reviewed Approve How is $\sin x$ considered a function
Sep
28
reviewed Close Relationship between 2 L-p spaces
Sep
28
reviewed No Action Needed Differentiate $e^x+x^e$
Sep
28
reviewed No Action Needed Show that Polynomials Are Complete on the Real Line
Sep
28
reviewed Approve General solution to first-order ODE in 3D
Sep
28
reviewed Leave Closed How to construct a smooth curve whose range is dense in $\mathbb R^2$?
Sep
28
reviewed Close Is the function $\sin(\lvert x\rvert)$ differentiable?
Sep
28
reviewed Close $V=\min \{X,Y\}$ is independent of $W=|X-Y|$
Sep
28
reviewed Close First order separable differential equations
Sep
28
reviewed Leave Open how inner products are defined on a vector space?
Sep
28
reviewed Close Let $V$ be finite dimensional v.s. and $0 \ne T\in \mathscr L(V)$ , then $\exists$ $S \in \mathscr L(V)$ such that $0 \ne T \circ S$ is idempotent
Sep
28
reviewed Reopen What number is “b” in the following theorem?
Sep
28
reviewed Close Is sin(1/x) periodic?with what period time?
Sep
28
reviewed Close The limit of $\sqrt{x^2+x+1}-\sqrt{x^2+1}$ as $x\to\infty$
Sep
28
reviewed Leave Open Separate a list of spheres into several lists, each contained in a sphere with a radius no larger than specified.
Sep
28
reviewed Close Non-discrete locally compact Hausdorff groups which do not satisfy the second axiom of countability
Sep
28
reviewed Approve How do I test if a set of matrices is a subspace?