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David Etler's user avatar
David Etler's user avatar
David Etler's user avatar
David Etler
  • Member for 9 years, 6 months
  • Last seen more than 2 years ago
  • Newark, NJ, USA
6 votes
Accepted

Show that $\nabla(fg)=f\nabla g+g\nabla f$

3 votes

Reversing the order of double integral

2 votes

$\sqrt{4 -2 \sqrt{3}} = a + b\sqrt{3}$, where numbers $a$ and $b$ are rational

2 votes
Accepted

Why are the units Radians? Related rates with an angle and $\frac{d\theta}{dt}$

2 votes
Accepted

$0/0$ type limit question.

2 votes

How to find the equation for a parabola for which you are given two points and the vertex?

2 votes

Solution to differential equations $y(0)=1$ and $y^{(n)}=y+1$

2 votes

Differentiating a multivariable function

1 vote

How to evaluate the following limit? $\lim\limits_{x\to1}\frac{x^n+x^{n-1}+x^{n-2}+\cdots+x-n}{x-1}.$

1 vote

What's the relationship between a polynomial $P_{n}\left(x\right)$ and $P_{n}\left(\frac{d}{dx}\right)$?

0 votes

12th order derivative using Leibniz

0 votes

roots of f (x)= $ x^3 +ax^2 + 6x - 1$

0 votes

Most efficient way to integrate $\int_0^\pi \sqrt{4\sin^2 x - 4\sin x + 1}\,dx$?

0 votes

Calculating limits for indeterminate forms