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john's user avatar
john's user avatar
john
  • Member for 8 years, 9 months
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6 votes

What exactly is the difference between a derivative and a total derivative?

6 votes

What's the area of one arch of a cycloid?

3 votes

How to calculate the area of a 3D triangle?

3 votes

An inflection point where the second derivative doesn't exist?

2 votes

Show that (p ∧ q) → (p ∨ q) is a tautology?

2 votes

Having trouble with finding solutions to sine equation.

1 vote

Express this limit as a definite integral. No interval given. $\lim\limits_{n\to\infty}\sum_{k=1}^n \left(1+\frac{2k}{n}\right)\cdot \frac{2}{n}$

1 vote

Interpretation of directional derivative without unit vector

1 vote

Find all $z\in\Bbb C$ such that $|z+1|+ |z-1|=4$

1 vote

Why is it called $SSS$ similarity?

1 vote

Proof that $1+2+3+4+\cdots+n = \frac{n\times(n+1)}2$

0 votes

I am confused on the last step of "differentiability implies continuity"

0 votes

Proof for exponentiation in modular arithemetic

0 votes

Finding $\lim_{x\to\pi/4}\frac{\tan(x)-1}{x-\pi/4}$.

0 votes

Maple: assign derivative to function

0 votes

Finding derivative of $\sqrt[3]{x}$ using only limits

0 votes

Can the limit of a product exist if neither of its factors exist?

0 votes

Elementary Separable Differential Equation with tricky integral

0 votes

On the reiteration (or repetition) rule in natural deduction: is the rule "obvious" or does it need a proof?

0 votes

Does one always use augmented matrices to solve systems of linear equations?

0 votes

If $n\ge m$, then the number of $m$-cycles in $S_n$ is given by $\frac{n(n-1)(n-2)\cdots(n-m+1)}{m}$.

-4 votes

Is one-to-one correspondence the same as bijection?