2bornot2b
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Questions Answered

Rohitkhanna:
Group Title
for which integer values of "x"
x^2+19x+92
is a perfect square.
…
 updated 9 months ago
 27 replies
 2 Medals
Mathematics

cshalvey:
Group Title
Ok, I have the list of people who have applied to be Ambassadors. I want the present group to review these and vote on their selections. As …
 updated one year ago
 33 replies
 7 Medals
Mathematics

2bornot2b:
Group Title
If a, b, c be three positive numbers and a+b+c=1 then prove that
\[(a+\frac{1}{a})^2+(b+\frac{1}{b})^2+(c+\frac{1}{c})^2\ge 33\frac{1}{3}\]
 updated 2 years ago
 14 replies
 4 Medals
Mathematics

LinuxCharmd:
Group Title
Solve: 8x  y = 6 and xy = 9
 updated 2 years ago
 6 replies
 1 Medal
Mathematics

jcyogi:
Group Title
Pentagon ABCDE and pentagon A'B'C'D'E' are shown on the coordinate plane below.
…
 updated 2 years ago
 4 replies
 No Medals Yet
Mathematics

jcyogi:
Group Title
Triangle XYZ is shown on the coordinate plane below.
…
 updated 2 years ago
 3 replies
 No Medals Yet
Mathematics

pilotman56:
Group Title
Find A B. A: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} B: {−2, −1, 1, 4, 7, 11}
 updated 2 years ago
 8 replies
 1 Medal
Mathematics

ally890:
Group Title
x5(x+2)=26
 updated 2 years ago
 5 replies
 No Medals Yet
Mathematics

ParthKohli:
Group Title
How do I solve \(\text{SYSTEM OF EQUATIONS?}\)
Look below to see the tutorial.
 updated 2 years ago
 32 replies
 10 Medals
Mathematics

2bornot2b:
Group Title
What is the difference between exp(z) and \(e^z\). z is complex.
 updated 2 years ago
 17 replies
 2 Medals
Mathematics

2bornot2b:
Group Title
Prove that
\[\huge{(e^w)^z=e^{[(w+2ni\pi)(z)]}}\]
but \[\huge (e^w)^z\ne e^{(wz)}\] where w and z are complex.
 updated 2 years ago
 28 replies
 No Medals Yet
Mathematics

2bornot2b:
Group Title
Can someone explain why the last equality is possible?
\[\large{a^b=(re^{i\theta })^b}\]\[\large{=(e^{ln~r+i\theta})^b=e^{(ln~r+i\theta)b}}…
 updated 2 years ago
 27 replies
 3 Medals
Mathematics

2bornot2b:
Group Title
\[\huge{a^b=e^{b~Loga}}\]
Here a and b are complex numbers.
This is the definition of complex exponent. Why is it defined so?
 updated 2 years ago
 26 replies
 2 Medals
Mathematics

2bornot2b:
Group Title
How do we figure out what is going to be the domain of the log function for complex numbers? It is easy to figure out for inverse trigonomet…
 updated 2 years ago
 13 replies
 1 Medal
Mathematics

Answerthisnow:
Group Title
Can't anyone help i really don't know where to start on this please please.:)
A rectangular pyramid and a rectangular prism have bases of th…
 updated 2 years ago
 2 replies
 1 Medal
Mathematics

MSFFL:
Group Title
For the equation find the equation of the graph that is parallel and perpendicular that passes through the specified point. Then graph the e…
 updated 2 years ago
 8 replies
 1 Medal
Mathematics

Matt6288:
Group Title
Who thinks they there should be a Music subject? I do for numerous reasons whats yours if your a supporter please comment :) TY!
(…
 updated 2 years ago
 117 replies
 12 Medals
Mathematics

booboobear10:
Group Title
Which set of numbers does not create a triangle?
115 cm, 65 cm, 1.5 m
…
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

2bornot2b:
Group Title
How many members of the set S={x:1≤x≤100} are of the form 4n1. I guess the answer is 25, but is there a way to prove it or show it?
 updated 2 years ago
 4 replies
 5 Medals
Mathematics

2bornot2b:
Group Title
If \(a_1, a_2,...a_n\) is a complete set of residues modulo \(n\) and \(gcd(a, n)=1\), then prove that \(aa_1, aa_2,...aa_n\) is also a com…
 updated 2 years ago
 8 replies
 2 Medals
Mathematics

deadman340:
Group Title
any one probablity expert or knows the link of key book for my probablity book.
 updated 2 years ago
 6 replies
 No Medals Yet
Mathematics

Tchan:
Group Title
Arun is constructing a triangle DEF congruent to triangle PQR. An acute scalene triangle PQR. He marked a point D and adjusted the width…
 updated 2 years ago
 4 replies
 1 Medal
Mathematics

tylaii:
Group Title
The set of ordered pairs below defines a relation. In each ordered pair (x, y), x represents the daily wages of a plumber, and y represents …
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

meme6291:
Group Title
How can i create a formula that will tell me how many people are in the us if 1/4th of the people equal 57.7 million
 updated 2 years ago
 4 replies
 No Medals Yet
Mathematics

fairypek:
Group Title
what minerals can help heart to pump blood?
 updated 2 years ago
 4 replies
 1 Medal
Mathematics

FoolForMath:
Group Title
Fool's problems of the day,
[** EDIT: Complimentary problem added **]…
 updated 2 years ago
 81 replies
 13 Medals
Mathematics

2bornot2b:
Group Title
If \(d=gcd(a,b)\), then show that \(gcd(a^2,b^2)=d^2\)
 updated 2 years ago
 13 replies
 2 Medals
Mathematics

2bornot2b:
Group Title
If gcd(a,b)=1 then prove that gcd(ac,b)=gcd(c,b)
 updated 2 years ago
 7 replies
 4 Medals
Mathematics

Brad1996:
Group Title
An important political document to come out of the French Revolution was
Answer
The Bill of Rights.
…
 updated 2 years ago
 26 replies
 2 Medals
Mathematics

computergeek123:
Group Title
If 62.7 g N2 react with 23.8 g H2 according to the reaction below, how many grams of ammonia (NH3) can be produced, and how many grams of th…
 updated 2 years ago
 14 replies
 1 Medal
Mathematics
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