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Snacc
  • Member for 5 years, 4 months
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93 votes
Accepted

Why does a polynomial with real, simple roots change its sign between its roots?

4 votes
Accepted

Solving $\int_{0}^{2\pi}\frac{d\phi}{2+\sin(\phi)}$ with complex exponentials

3 votes
Accepted

Relation between roots and coefficients of equation

3 votes
Accepted

Find the real and imaginary parts of the principal branch of $f(z) = 200^z$

2 votes
Accepted

For how many $n\in \{1,...,500\}$ is $n$ a multiple of one or more of $5,6$ or $7$

1 vote

You are to manufacture a tin can with a total surface area of one square foot. What dimensions do you make the can so that the volume is maximized?

1 vote

Find the area of the largest rectangle that can be inscribed in the ellipse $ \frac {x^2}{2} + \frac {y^2}{6} = 1$

1 vote
Accepted

A number is randomly chosen in interval 1 to 3. what is prob that first digit to right of decimal is 5

1 vote
Accepted

ch. 8.3 Exercise 1 in Cohomology of Number Fields

1 vote
Accepted

$H^1(G_{K_v}, M^D) \cong \widehat{H^1(G_{K_v}, M)}$, Tate dual and Pontryagin dual

1 vote
Accepted

Series convergence third roots of unity

1 vote

Is there a better/faster way to take anti-derivatives of simple functions than "reversing" the derivative rules?

0 votes

Is $\mathbb{Q}^n$ countable?

0 votes

First steps in the first convergents of the continuous fraction associated with $\Phi$

0 votes
Accepted

How do I find the 3rd point on a circle to make an isosceles triangle?

0 votes

Clarification over notation for derivatives

0 votes

Showing that a function is identically zero on an interval

0 votes

Where am I going wrong with my proof $\int( \sin x +\cos x) dx=0$