Mathematics
Trobeli's user avatar
Trobeli's user avatar
Trobeli's user avatar
Trobeli
  • Member for 6 years, 5 months
  • Last seen this week
  • Chile
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3,232
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29
answers
146
questions
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6
Score
22
Posts
13
Posts %
4
Score
12
Posts
7
Posts %
4
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11
Posts
6
Posts %
2
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52
Posts
30
Posts %
1
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9
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5
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0
Score
26
Posts
15
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
question
16
Finding the shaded area in a triangle
Jun 30, 2018
question
9
Prove that a number composed of only $2n$ "1"s, minus another number composed of only $n$ "2"s, is a perfect square.
Jan 30, 2018
question
8
Prove that $x^x+y^y=z^z$ doesn't have integer solutions
Feb 8, 2018
question
6
In an isosceles triangle $ABC$ show that $PM+PN$ does not depend on the position of the chosen point P.
Feb 19, 2019
question
6
Find the angle in a quadrilateral
Feb 24, 2019
question
5
Right triangle with 2 equilateral triangles
Oct 28, 2018
question
5
Solve $\frac{\sin(xº)\sin(80º)}{\sin(170º - xº) \sin(70º)} = \frac {\sin(60º)}{\sin (100º)}$
Jun 6, 2019
question
5
Proof by epsilon-delta of $\lim \limits_{x \to 1} 3x^2+1=4$
Jul 28, 2019
answer
5
Why does $\int_{-\infty}^\infty \operatorname{sech} x \, \mathrm{d}x =\pi\;$?
Oct 28, 2021
question
4
If $\frac{2}{x}=2-x,$ Find $[x^9-(x^4+x^2+1)(x^6+x^3+1)]^3$ without entering $\Bbb C$
Jun 3, 2019

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