Question

Is $\frac{1}{1+0.1x}$ hyperbolic in $x$?

score 60 · Answer 1 · 2026-03-25 03:02:16

60

Views

Is $\frac{1}{1+0.1x}$ hyperbolic in $x$?

Published on 25 Mar 2026 - 3:02

score 245 · Answer 2 · 2018-03-11 04:24:51

245

Views

Proving $1+\cos a + \cos 2 a+ \cdots + \cos(n-1)a = 0$, when $a=2\pi/n$ and $n$ is odd

Published on 11 Mar 2018 - 4:24

score 1.2k · Answer 3 · 2026-03-27 11:46:12

1.2k

Views

Prove $ \sin^4(x)$ identity using $z=cis(x)?$

Published on 27 Mar 2026 - 11:46

score 65 · Answer 4 · 2026-03-25 10:55:48

65

Views

Computing $\int^{\pi/2}_0{\frac{1}{4\cos{x}+5}}$, $x \in \mathbb{R}$ by substituting $\cos{x} = (e^{ix}+e^{-ix})/2$?

Published on 25 Mar 2026 - 10:55

score 563 · Answer 5 · 2026-03-25 13:33:19

563

Views

Find the equation of median without finding its vertices

Published on 25 Mar 2026 - 13:33

score 62 · Answer 6 · 2026-03-30 03:56:28

62

Views

finding the limit of fraction with $\ln x$ and $\sin x$

Published on 30 Mar 2026 - 3:56

score 3.9k · Answer 7 · 2026-03-25 16:06:33

3.9k

Views

Finding three unknowns from three equations. Solvable? If so, how?

Published on 25 Mar 2026 - 16:06

score 157 · Answer 8 · 2018-03-11 21:08:24

157

Views

How Can you factor $1/2$ out of integral of $\cos2x$?

Published on 11 Mar 2018 - 21:08

score 999 · Answer 9 · 2026-03-25 07:42:46

999

Views

Why does $\theta = 135$ degrees and not $45$ degrees?

Published on 25 Mar 2026 - 7:42

score 134 · Answer 10 · 2018-03-12 08:54:01

134

Views

I need help with proving $\cos(\arcsin(x)) = \sqrt{1-x^2}$

Published on 12 Mar 2018 - 8:54

score 344 · Answer 11 · 2018-03-12 13:09:26

344

Views

Solve the equation $\cos^2x+\cos^22x+\cos^23x=1$

Published on 12 Mar 2018 - 13:09

score 1.2k · Answer 12 · 2026-03-26 22:55:21

1.2k

Views

Calculating the coordinates of end terminal point of an arc from known r, arc in radyan and starting terminal point coordinates of the arc.

Published on 26 Mar 2026 - 22:55

score 294 · Answer 13 · 2026-03-29 10:15:20

294

Views

Convergence of nested sin and cos

Published on 29 Mar 2026 - 10:15

score 1k · Answer 14 · 2026-03-25 13:34:19

1k

Views

How can I work out the length of the sides of an Equilateral triangle that exists in a circle?

Published on 25 Mar 2026 - 13:34

score 80 · Answer 15 · 2026-03-29 10:15:25

80

Views

Is there a way to explain the divergence of the arctangent series without complex numbers?

Published on 29 Mar 2026 - 10:15

List Question

Is $\frac{1}{1+0.1x}$ hyperbolic in $x$?

Proving $1+\cos a + \cos 2 a+ \cdots + \cos(n-1)a = 0$, when $a=2\pi/n$ and $n$ is odd

Prove $ \sin^4(x)$ identity using $z=cis(x)?$

Computing $\int^{\pi/2}_0{\frac{1}{4\cos{x}+5}}$, $x \in \mathbb{R}$ by substituting $\cos{x} = (e^{ix}+e^{-ix})/2$?

Find the equation of median without finding its vertices

finding the limit of fraction with $\ln x$ and $\sin x$

Finding three unknowns from three equations. Solvable? If so, how?

How Can you factor $1/2$ out of integral of $\cos2x$?

Why does $\theta = 135$ degrees and not $45$ degrees?

I need help with proving $\cos(\arcsin(x)) = \sqrt{1-x^2}$

Solve the equation $\cos^2x+\cos^22x+\cos^23x=1$

Calculating the coordinates of end terminal point of an arc from known r, arc in radyan and starting terminal point coordinates of the arc.

Convergence of nested sin and cos

How can I work out the length of the sides of an Equilateral triangle that exists in a circle?

Is there a way to explain the divergence of the arctangent series without complex numbers?

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