User S.C.B.

45 votes

6 answers

4k views

Which derivatives are eventually periodic?

asked Feb 9, 2016 at 1:22

27 votes

2 answers

536 views

Numbers that are clearly NOT a Square

asked Feb 14, 2016 at 4:41

14 votes

1 answer

575 views

Are the fractional parts of powers of $\pi$ divergent?

asked May 5, 2016 at 3:32

9 votes

1 answer

544 views

Find all $f:\mathbb {R} \rightarrow \mathbb {R}$ where $f(f(x))=f'(x)f(x)+c$

asked Feb 5, 2016 at 9:40

7 votes

2 answers

169 views

Finding the minimum of $x^2+y^2$ for $(x^2y-xy^2)(x^3-y^3)=x^3+y^3$ and $xy>0$.

asked Feb 8, 2016 at 0:52

6 votes

3 answers

2k views

Finding the shortest distance between two Parabolas

asked Feb 12, 2016 at 1:27

6 votes

1 answer

177 views

Using Vieta's Formula

asked Sep 26, 2016 at 16:55

5 votes

1 answer

132 views

How to solve $f(x)+f\left(\frac{1}{x}\right)=e^{x+\frac{1}{x}}$

asked May 18, 2016 at 8:12

4 votes

2 answers

2k views

If $x+y+z=0$, prove that $\frac{x^2}{2x^2+yz}+\frac{y^2}{2y^2+zx}+\frac{z^2}{2z^2+xy}=1$

asked Apr 14, 2016 at 6:58

4 votes

1 answer

764 views

Why are there conflicting results for integration?

asked May 5, 2016 at 1:29

3 votes

0 answers

156 views

Simplifying Fraction for Nested Radicals

asked Mar 19, 2016 at 1:38

2 votes

1 answer

146 views

Are primes less than the sum of divisors?

asked Apr 21, 2016 at 6:51

2 votes

2 answers

149 views

When the Sum of digits exceed the Number of Divisors

asked Feb 8, 2016 at 12:58

2 votes

4 answers

283 views

Proving that the exponential inequality $e^x \ge x^e$ holds for all $x \ge 0$ [duplicate]

asked Feb 5, 2016 at 14:39

2 votes

2 answers

301 views

Comparing a Factorial and a Perfect Power

asked Feb 7, 2016 at 2:40

1 vote

2 answers

416 views

Memorizing Formulas for Differentiation

asked Feb 7, 2016 at 6:38

1 vote

1 answer

155 views

Error with the proof that all solutions to the Cauchy Functional Equation are linear

asked Feb 6, 2016 at 5:27

1 vote

4 answers

245 views

Finding the height of a Building at Night

asked Feb 10, 2016 at 9:40

0 votes

1 answer

165 views

Connection between 7 and 13 [closed]

asked Feb 16, 2016 at 9:52

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19 Questions

Which derivatives are eventually periodic?

Numbers that are clearly NOT a Square

Are the fractional parts of powers of $\pi$ divergent?

Find all $f:\mathbb {R} \rightarrow \mathbb {R}$ where $f(f(x))=f'(x)f(x)+c$

Finding the minimum of $x^2+y^2$ for $(x^2y-xy^2)(x^3-y^3)=x^3+y^3$ and $xy>0$.

Finding the shortest distance between two Parabolas

Using Vieta's Formula

How to solve $f(x)+f\left(\frac{1}{x}\right)=e^{x+\frac{1}{x}}$

If $x+y+z=0$, prove that $\frac{x^2}{2x^2+yz}+\frac{y^2}{2y^2+zx}+\frac{z^2}{2z^2+xy}=1$

Why are there conflicting results for integration?

Simplifying Fraction for Nested Radicals

Are primes less than the sum of divisors?

When the Sum of digits exceed the Number of Divisors

Proving that the exponential inequality $e^x \ge x^e$ holds for all $x \ge 0$ [duplicate]

Comparing a Factorial and a Perfect Power

Memorizing Formulas for Differentiation

Error with the proof that all solutions to the Cauchy Functional Equation are linear

Finding the height of a Building at Night

Connection between 7 and 13 [closed]