Keneth Adrian

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I am a student who loves mathematics

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11 Questions

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8	Show that $\tan 3x =\frac{ \sin x + \sin 3x+ \sin 5x }{\cos x + \cos 3x + \cos 5x}$
8	Let $x$ and $y$ be positive integers such that $xy \mid x^2+y^2+1$.
5	Show that $2^n$ is not a sum of consecutive positive integers [duplicate]
5	Solving $x$ for $y= 3^x-2^x$
3	On Integer Partition

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358 Reputation

+33	Solve a parabola problem?
+18	Show that $\tan 3x =\frac{ \sin x + \sin 3x+ \sin 5x }{\cos x + \cos 3x + \cos 5x}$
+5	Show that $2^n=O(n!)$
+5	Show that $2^n$ is not a sum of consecutive positive integers

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6 Answers

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2	Elementary Geometry
1	Solve a parabola problem?
1	$5^{x}+2^{y}=2^{x}+5^{y} =\frac{7}{10}$ Work out the values of $\frac{1}{x+y}$
0	In the induction proof for $(1+p)^n \geq 1 + np$, a term is dropped and I don't understand why.
0	Find the values of $a$ and $b$

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17 Tags

2 triangle	0 sequences-and-series × 2
2 geometry	0 trigonometry × 2
1 algebra-precalculus × 4	0 number-theory
1 exponentiation	0 combinatorics
1 analytic-geometry	0 average

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$Mathematics Stack Exchange$	Mathematics	358 rep	18
$TeX - LaTeX Stack Exchange$	TeX - LaTeX	130 rep	3
	Stack Overflow	123 rep	15
	Programmers	101 rep	1

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