RolyPoly
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Questions Answered

RolyPoly:
Group Title
Given \(\mathbb{F}\) is an ordered field, prove 1>0.
 updated 5 days ago
 15 replies
 No Medals Yet
Mathematics

katcon:
Group Title
how do i use the distributive law to factor 28x + 4
 updated 21 days ago
 4 replies
 1 Medal
Mathematics

prassana:
Group Title
integral of cos5x cos3x dx
 updated 24 days ago
 2 replies
 3 Medals
Mathematics

Hahuja:
Group Title
Explain why 1 raised to any power is equal to 1 ?
 updated 24 days ago
 59 replies
 1 Medal
Mathematics

sdvaishnav21:
Group Title
one number is8 more than a second number. The sum of the two number is 18.Find the number..
 updated 25 days ago
 8 replies
 No Medals Yet
Mathematics

Xtziee:
Group Title
lim cos2x  cos 3x/cos4x  1 x> 0
 updated 25 days ago
 9 replies
 3 Medals
Mathematics

prowrestler:
Group Title
The difference between long division and synthetic division is:
…
 updated 26 days ago
 9 replies
 No Medals Yet
Mathematics

stephonjones:
Group Title
y=x^27x8
 updated 26 days ago
 4 replies
 No Medals Yet
Mathematics

Quante:
Group Title
Which figurative line is the most appropriate to complete this poem?
Willows bent to greet each other,
…
 updated 26 days ago
 1 reply
 No Medals Yet
Mathematics

prowrestler:
Group Title
If f(x) = 3x – 5 and g(x) = x2, find (f º g)(3)
…
 updated 26 days ago
 14 replies
 1 Medal
Mathematics

eric_d:
Group Title
Multiplication of matrix
 updated 26 days ago
 18 replies
 3 Medals
Mathematics

adam19980:
Group Title
sin2xcos2x=(1+√3)/2
 updated 26 days ago
 19 replies
 2 Medals
Mathematics

cheese809:
Group Title
Find the angle between the given vectors to the nearest tenth of a degree.
u = <8, 7>, v = <9, 7>
…
 updated one month ago
 11 replies
 1 Medal
Mathematics

madelinm21:
Group Title
Let U = {4, 8, 12, 16, 20, 24, 28, 32} and A = {12, 16, 20, 28}. Find A
 updated one month ago
 2 replies
 No Medals Yet
Mathematics

cheese809:
Group Title
Find a ⋅ b.
a = <5, 2>, b = <4, 5>
 updated one month ago
 10 replies
 1 Medal
Mathematics

RolyPoly:
Group Title
Let A and B be square matrices of the same size. If A and B are both ______, so is AB.
1) symmetric
2) invertible
…
 updated 3 months ago
 31 replies
 1 Medal
Mathematics

RolyPoly:
Group Title
Let A be a 4x7 matrix with rank 4. Which of the following(s) is/are true?
1) the rows of A are linearly independent
2) the columns of A mu…
 updated 3 months ago
 12 replies
 1 Medal
Mathematics

BethanyAmanda:
Group Title
a website requires a four digit password in which the numbers cannot repeat how many different combinations are there
 updated 4 months ago
 1 reply
 No Medals Yet
Mathematics

RolyPoly:
Group Title
Find the range of the function \(f(x) = x^\frac{1}{x}\)
 updated 4 months ago
 11 replies
 7 Medals
Mathematics

irm:
Group Title
(xy)dx + xdy = 0
 updated 5 months ago
 1 reply
 1 Medal
Mathematics

RolyPoly:
Group Title
Is this statement true?
"If U, W are subspaces of \(\mathbb{R}^n\) and dim U + dim W = n, then \(U\cap W = {0}\)"
 updated 4 months ago
 3 replies
 2 Medals
Mathematics

suzanka:
Group Title
Solving linear equation with matrices
So, we were taught how to solve linear equations using the GaussJordan algorithm. What bothers me …
 updated 5 months ago
 15 replies
 2 Medals
Mathematics

freshkid944:
Group Title
5^x=13
 updated 5 months ago
 11 replies
 No Medals Yet
Mathematics

RolyPoly:
Group Title
What can you tell about the eigenvalues of matrix \(A^2\) if an eigenvalue of matrix \(A\) is \(\lambda\) and the corresponding eigenvector…
 updated 5 months ago
 1 reply
 No Medals Yet
Mathematics

RolyPoly:
Group Title
The number of passengers of terminal A, A(n) and terminal B, B(n), in the nth year are \(A(n)=2pq^n\) and \(B(n) = npq^2\), where p and q ar…
 updated 5 months ago
 33 replies
 3 Medals
Mathematics

RolyPoly:
Group Title
A student committee consists of 20 boys and 15 girls. A team of 8 students is selected randomly from the committee to participate in an acti…
 updated 5 months ago
 33 replies
 3 Medals
Mathematics

RolyPoly:
Group Title
Why do we use radian instead of degree in "higher mathematics", for example, in calculus?
 updated 5 months ago
 9 replies
 No Medals Yet
Mathematics

RolyPoly:
Group Title
Given an undirected graph H, let C be the adjacency matrix of H. What is the meaning of entries in \(C^n\)?
 updated 5 months ago
 20 replies
 2 Medals
Mathematics

alooy:
Group Title
Inverse Laplace Transform (2s^2+4s+8)/(s^2+4)(s^2+2s+1)
 updated 6 months ago
 4 replies
 4 Medals
Mathematics

bolobolo:
Group Title
integral checking
 updated 6 months ago
 8 replies
 No Medals Yet
Mathematics
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