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Sullo
  • Member for 2 years, 8 months
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4 votes
1 answer
361 views

Inequality in 4 variables Vasc's EV

4 votes
1 answer
74 views

Determine the Maximum Value

3 votes
3 answers
74 views

If $\left(1+\sqrt2\right)^{2011}=a+b\sqrt{2}$, for integers $a$ and $b$, then what is $\left(1-\sqrt2\right)^{2010}$ expressed using $a$ and $b$?

2 votes
2 answers
67 views

Combinatorial binomial

2 votes
1 answer
88 views

Prove that $a + b \geq 4k$

2 votes
1 answer
109 views

Find the total number of 7-digit

2 votes
1 answer
50 views

What is the value of $ g (x + f (y)) $?

2 votes
1 answer
226 views

Classic Complex Numbers - Given $z+\frac 1z=2\cos 3^\circ$, find least integer greater than $z^{2000}+\frac 1{z^{2000}}$

2 votes
0 answers
94 views

Hacking the social [Combinatorics]

2 votes
1 answer
84 views

Prove that in any triangle

1 vote
0 answers
62 views

Find all values of $x_0=a$

1 vote
1 answer
101 views

Combinatorial with point in the plane

1 vote
0 answers
30 views

An integer sequence problem Generalization

1 vote
1 answer
74 views

Invariant to inversions 2

1 vote
2 answers
140 views

Solve equation $(2+ \sqrt{5})^{\frac{x}{2}}+2 \cdot \left(\frac{7 - 3 \sqrt{5}}{2}\right)^{\frac{x}{4}}=5$

1 vote
0 answers
22 views

Pasture in the field [duplicate]

1 vote
0 answers
76 views

Complex Number Module

1 vote
0 answers
57 views

Find all functions $ f: (0, \infty) \mapsto (0, \infty)$ [duplicate]

1 vote
2 answers
66 views

Calculate the following determinant: [duplicate]

1 vote
1 answer
95 views

Determine the rightmost three digits

1 vote
0 answers
86 views

ind min and max of $\sum_{1\leq i<j\leq n} (3 \min\{j-i,n+i-j\}-n)x_ix_j$

1 vote
1 answer
48 views

Isosceles trapezoid circunference

1 vote
1 answer
47 views

Calculate $x$ [exponential equation]

1 vote
0 answers
43 views

Pascal Triangle-like Sequence

1 vote
2 answers
68 views

Calculate $ f [f (x)] $

0 votes
1 answer
42 views

Write, with four fours and mathematical signs, an expression that is equal to a given integer.

0 votes
1 answer
29 views

what is the percentage chance that I will invoke the spear every 5 strokes?

0 votes
2 answers
66 views

Calculate the diagonal of a cube

0 votes
2 answers
85 views

Probability that parallel lines

0 votes
0 answers
27 views

Find the polynomials [duplicate]