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illysial
  • Member for 8 years, 8 months
  • Last seen more than a month ago
7 votes
Accepted

Is there an easier way to find $\frac{\mathrm d^9}{\mathrm dx^9}(x^8\ln x)$ than using the product rule repeatedly?

4 votes

Solve the initial value problem: $\frac{dx}{dt}=2t \sin x$; $x(0)=\frac{\pi}{2}$

3 votes

The limit of $e^{\frac{1}{x^2 + y^2}}$ as $(x, y) \to (0, 0)$

3 votes

find a limit of $\lim_{n\rightarrow\infty}\left(\frac{a^{1/n}+b^{1/n}}{2}\right)^n$

3 votes

Are Mersenne prime exponents always odd?

3 votes

Algebra + Real Analysis video lectures

3 votes

Multivariable optimization - how to parametrize a boundary?

3 votes
Accepted

Is this derivative correct?

3 votes

Absolute Max/Min of a function of two variables on a set?

3 votes

using newtons method to find abs max

3 votes

the set of points where f is continuous is in Borel

2 votes

If$\mu$ is $\sigma$- finite, $\epsilon>0$, there exists $A\in \mathcal{A}$ such that $\mu(A)<\infty$ and $\epsilon+\int_A f>\int f$

2 votes

If $\mathrm{min}_{u\in U}||v-u||=||v-u_0||$, then $v-u_0\in U^{\perp}$

2 votes

How to find for which real numbers $a$ and $b$, the following functions are differentiable at $0$?

2 votes

True conditonal statement with false converse

2 votes

Quadratic equations: Why does factoring by grouping work?

2 votes
Accepted

Differentiating $\int_{\cos x}^{4x}\cos u^5 du$

2 votes
Accepted

Absorption Law with Negation

2 votes

Finding the transformation matrix given the transformation

1 vote

Finding the derivative of $\frac1{\sqrt{x^2-1}}$

1 vote

Getting 90 degree coordinate of 2 coordinates that you know

1 vote

Using Eigenvalues to prove a matrix?

1 vote

Changing Order of Integration in x,y,z plane

1 vote

The number of elements in $\mathbb{Z}_{11}$ satisfies $x^{12}-x^{10}=2$.

1 vote

Proving inequalities using Mean Value Theorem

1 vote
Accepted

Gemetric representation of complex numbers

1 vote
Accepted

Linear transformation's kernel and image of a polynomial

1 vote

How to integrate $1/(u^2 + u^4)$ du?

1 vote

Range of inverse trigonometric function

1 vote
Accepted

Evaluate a line integral using the fundamental theorem of line integrals