Zarkon
 Name:
 Lord Zarkon
 School:
 Planet Doom University
 About:
 Ph.D.s in Galactic Domination and Mathematical Statistics.
One day I hope to be ruler of the Universe. Also, there are infinity many twin primes.
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Questions Answered

minisweet4:
Group Title
sin^1 (sin 5pi/4) = ?
I don't remember how to find the answer
 updated 11 hours ago
 3 replies
 No Medals Yet
Mathematics

ogxbre:
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how do you simplify
(4^8)^3 ?
 updated 15 hours ago
 6 replies
 4 Medals
Mathematics

BloomLocke367:
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Can someone help with probability?
 updated 2 days ago
 48 replies
 4 Medals
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lisa2005:
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Is 1/9 a irrational number ?
 updated 3 days ago
 9 replies
 2 Medals
Mathematics

Cuttifer:
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5. A matrix is symmetric if it is equal to its transpose. Let \[A\] be an mxn matrix.
(a) Explain why the matrix multiplications \[A^{T}A\] …
 updated 3 days ago
 11 replies
 2 Medals
Mathematics

Unstoppable98:
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Betty's BiteSize Candies are packaged in bags. The number of candies per bag is normally distributed, with a mean of 50 and a standard devi…
 updated 4 days ago
 24 replies
 2 Medals
Mathematics

mickey4691:
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Normal Distribution question that is based on a Poisson Random Variable. Attached is the photo of the question, and a posting of my work (wh…
 updated 4 days ago
 27 replies
 1 Medal
Mathematics

Melissa_Something:
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Really hard & annoying math: Find and simplify the different quotient of f:
 updated 5 days ago
 15 replies
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Mathematics

highschoolmom2010:
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Use a graphing calculator to solve the equation (3 cos t=1) in the interval from the following form
(see attachment)
Round to the nearest…
 updated 8 days ago
 5 replies
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Mathematics

NathanJHW:
Group Title
For a continuous function f(x), f(1) = 11, and integral (1,5) f'(x) =9. Determine f(5).
 updated 12 days ago
 6 replies
 1 Medal
Mathematics

TheWaffleMan149:
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I have an extra negative in this problem, and I can't figure out why it shouldn't be there:
Evaluate the improper integral:
 updated 14 days ago
 17 replies
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Mathematics

patty27:
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For a zscore of 1.94, what is the probability of finding a higher zscore?
 updated 14 days ago
 42 replies
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Mathematics

jpes2193:
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Square Root Problem. Need help. See comments
…
 updated 14 days ago
 44 replies
 2 Medals
Mathematics

NathanJHW:
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Given that f(x) is continuous, integral (2,2) f(x) dx = 7, integral (0,4) f(x) dx =3, and integral (2,4) f(x) dx = 2. Then integral (0,2)…
 updated 15 days ago
 3 replies
 1 Medal
Mathematics

TheWaffleMan149:
Group Title
Show that the two functions grow at the same rate:
sqrt(9^x + 2^x) and 3^x
 updated 15 days ago
 35 replies
 2 Medals
Mathematics

PFEH.1999:
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\(\Large \int\limits \frac{ (1+e^x)^2 }{ e^x } dx\)
Prove by induction that for \( x \ge 0 \) and any natural number \(n\), \(\large e^x…
 updated 15 days ago
 4 replies
 3 Medals
Mathematics

arsenkasparian:
Group Title
f(x)=cos(x) and g(x)=(x^(6))+1. Find: (g(f(x)))'
I got 6x^5(cos(x))(sin(x)) but is wrong.....where am I mistaken?
…
 updated 16 days ago
 9 replies
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Mathematics

mudwagaman9:
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How did I get 60?
…
 updated 16 days ago
 2 replies
 No Medals Yet
Mathematics

KathyMae95:
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Two number cubes are rolled. What is the probability that the sum of the numbers rolled is either a 4 or a 10?
 updated 16 days ago
 4 replies
 No Medals Yet
Mathematics

KathyMae95:
Group Title
A bag contains 3 red marbles, 2 blue marbles and 5 green marbles. What is the probability of selecting a blue marble, replacing it in the …
 updated 16 days ago
 6 replies
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Mathematics

debins33:
Group Title
If x and y are real numbers such that x > 1 and y < −1,
then which of the following inequalities must be true?
A. (x/y)> 1
…
 updated 16 days ago
 6 replies
 1 Medal
Mathematics

agross:
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derivative of 9sinh(lnt). I thought it should be (9cosh(lnt))/t but apparently that is incorrect...please help!!
 updated 16 days ago
 12 replies
 No Medals Yet
Mathematics

becktastic:
Group Title
Determine whether the series convergent or divergent (sqrt(n)+4)/n^2?
I'm at a loss for this one. Please do not just tell me "this serie…
 updated 17 days ago
 5 replies
 1 Medal
Mathematics

calclost_:
Group Title
Find the derivative of y=e^(4x)
 updated 17 days ago
 2 replies
 No Medals Yet
Mathematics

Andrew12840:
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Calculus:
What can be said about the continuity of the function.....
 updated 17 days ago
 2 replies
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Mathematics

iambatman:
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As I've been helping people with algebra recently I've noticed, most of the people have forgotten their exponent rules, and instead of telli…
 updated 8 days ago
 8 replies
 24 Medals
Mathematics

Loser66:
Group Title
Someone explains me, please
\(f(x) =x^{p1}+x^{p2}+.....+x^2+x+1\)
\(f(x+1) = \sum_{s=0}^{p1}\left(\begin{matrix}p\\s+1\end{matrix}\right)…
 updated 17 days ago
 7 replies
 2 Medals
Mathematics

Spitfire77:
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suppose x is a random variable with mean 20 and standard deviation 5. also suppose that Y is a random variable with mean 40 and standard dev…
 updated 19 days ago
 31 replies
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Mathematics

IloveHW:
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lim x>0 sin4x/x , can somone help me solve this step by step ?? thanks
 updated 20 days ago
 22 replies
 3 Medals
Mathematics

precal:
Group Title
FTC part 2 question
 updated 20 days ago
 22 replies
 3 Medals
Mathematics

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