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Jan
21
reviewed Approve Inequality $(n!)^2\le \left[\frac{(n+1)(n+2)}{6}\right]^n$
Jan
21
reviewed Reject $\sum_{i=1}^{\infty} n^2 (n+1)!$
Jan
21
reviewed Approve Point of intersection closest to the origin
Jan
21
reviewed Approve How to solve the improper integral $\int_{-\infty}^{\infty} \frac{x^2}{x^6+9}dx$ (possible trig substitution)
Jan
21
reviewed Approve Differential Equation $y'+y\cdot\frac{1}{1+t^2}=1-y\cdot\frac{t^3}{1+t^4}$
Jan
21
reviewed Reject How does constant affect the limit
Jan
21
reviewed Approve Finding the volume of revolution using the method of shells
Jan
19
comment Why is it that while taking the inverse matrix a Wronskian pops up in this solution?
Glad to help. The more you learn/farther you go in mathematics you will see more and more connections between all the things you've already done.
Jan
19
answered Why is it that while taking the inverse matrix a Wronskian pops up in this solution?
Jan
8
reviewed No Action Needed Circle tangent to two other circles
Jan
8
reviewed No Action Needed Calculating area of complex ploygons (odd shapes)
Jan
8
reviewed No Action Needed Deduction Theorem and Closed Formulas
Jan
8
reviewed Close Is my induction on euler's formula sufficient?
Jan
8
reviewed No Action Needed Prove that the result depends on the variable
Jan
6
reviewed Leave Open Simple limit problem without L'Hospital's rule
Jan
6
reviewed Leave Open When can we take that $f(1)=1$?
Jan
6
reviewed Leave Open Intersection of functions $\ln(x)$ and $\frac{1}{x}$
Jan
6
reviewed Leave Open connected graph with its vertices
Jan
6
reviewed Leave Open $n \times n$ matrix with entries in the set $\{0, 1\}$
Jan
6
reviewed Leave Closed Property of ideal