Questions Asked

Denebel:
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Why does sin(arcsin(x))=x? And can you write arcsin(x) as 1/(sin x)?
 updated 9 days ago
 3 replies
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Denebel:
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is it possible to build a switch to turn on and off LED lights with their own power source? I have these LED lights (http://www.partycity.co…
 updated 11 months ago
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Denebel:
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Grammar
which is correct grammatically? "I live in Kansas and have never seen the ocean." or "I live in Kansas and never saw the ocean." …
 updated one year ago
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Denebel:
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Can someone reason how would you find lim as n>infinity of (4^n)/n^2
 updated one year ago
 1 reply
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Denebel:
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Can someone help me with a series of problems concerning series? Will type up in comments.
 updated one year ago
 16 replies
 1 Medal

Denebel:
Group Title
Would this series converge or diverge?
sum from n=1 to infinity (1/(3n2)^(n+1/2) )? What test would you use?
 updated one year ago
 17 replies
 3 Medals

Denebel:
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integral of 2(tan x)(sec x)^2 dx = (tan x) ^2 = (sec x)^2? is this so?
 updated one year ago
 6 replies
 2 Medals

Denebel:
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Does ln1(e^x) = xln(e^s)1?
I graphed it but it does not look the same.
…
 updated one year ago
 2 replies
 1 Medal

Denebel:
Group Title
Is this series absolutely convergent, conditionally convergent, or divergent?
Sum from n=1 to infinity of (1) ^ n * [ (3^n)/(2^n + 3^n) …
 updated one year ago
 9 replies
 1 Medal

Denebel:
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How do you find the lim n > infinity ( n/ (n^21) ^ (1/2) )?
 updated one year ago
 8 replies
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Denebel:
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Coffee is draining from a conical filter into a cylindrical coffeepot at the rate of 10in^3/min.
Would dV/dt (filter) be represented as …
 updated 2 years ago
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Denebel:
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Hi, just always wondered what does it mean when you are asked to "write a response to video (X)". I always addressed the topic as what abou…
 updated 2 years ago
 2 replies
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Denebel:
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What combination of name and formula is not correct?
a) Copper(II) oxide CuO
…
 updated 2 years ago
 5 replies
 1 Medal

Denebel:
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Find the radius of an aluminum cylinder that is 2.00 cm long and has a mass of 12.4 g.
V = pi* r^2 * l
 updated 2 years ago
 8 replies
 3 Medals

Denebel:
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If you knew the answer to an inequality was something (say, 2 < x <10/3) how would you work backwards to find the inequality problem?
 updated 2 years ago
 2 replies
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Denebel:
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How does this simplification work? Can someone show me the intermediate steps?
 updated 2 years ago
 22 replies
 1 Medal

Denebel:
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Can somebody check my work: complete the square for 20x^2  5q + 12.
 updated 2 years ago
 8 replies
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Denebel:
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On a circle of radius 10, how long is an arc that subtends a central angle of 4pi/5 radians?
 updated 2 years ago
 1 reply
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Denebel:
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16x^2 + 24x + 9 = 0
 updated 2 years ago
 6 replies
 2 Medals

Denebel:
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How do you find the domain and range for
a) sqrt ( (1/x)+1 )
b) 1/ sqrt (x+1) ?
 updated 2 years ago
 17 replies
 2 Medals

Denebel:
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Express the edge length of a cube as a function of the cube's diagonal length d. Then express the surface area & volume of the cube as a fun…
 updated 2 years ago
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Denebel:
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Do I use was or were?
People's lives and the world was/were....?
 updated 2 years ago
 2 replies
 1 Medal

Denebel:
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The number 3.90 x 10 ^ 9 has how many significant figures?
 updated 2 years ago
 2 replies
 1 Medal

Denebel:
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A solid has a circular base of radius 3. If every plane cross section perpendicular to the x axis is an equilateral triangle, the. It's vol…
 updated 2 years ago
 6 replies
 4 Medals

Denebel:
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A particle moves along the xaxis so that its position at any time t> 0 is given by x(t) = t^4  10t^3 + 29t^2  36t +2. For which value of …
 updated 2 years ago
 16 replies
 2 Medals

Denebel:
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How do you solve, for how many real numbers does e^x = ln abs (x) ?
 updated 2 years ago
 5 replies
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Denebel:
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What is the max value of the derivative of f9x) = 3x^2x^3 ?
 updated 2 years ago
 3 replies
 1 Medal

Denebel:
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How would you simplify this?
(((6)^(1/2))^(1/3))^(1/4))
 updated 2 years ago
 5 replies
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Denebel:
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Find the volume of the solid analytically.
The solid lies between the planes perpendicular to the xaxis at x= 1 and x= 1. The cross secti…
 updated 2 years ago
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Denebel:
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how do I solve sin (x*pi/2) = x ?
 updated 2 years ago
 1 Medal
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