Intermediate/Advanced Algebra

For more advanced algebra topics, including Algebra II and Pre-Calculus.
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fibonacci problems? "If 8th number is 2017, what is largest possible value of 1st?"
2
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21
Views
2K
Dr.Peterson
Dr.Peterson
U
2 Complex numbers questions: If z is complex and |z+16|=4|z+1|, find |z|. Solve -i/(x-iy) = (4+7i)/(5-3i)
Replies
2
Views
404
pka
pka
A
having trouble with solving more complicated Rational Inequalities
Replies
3
Views
514
Dr.Peterson
Dr.Peterson
U
W is a subspace of P3 spanned by p1 = 0.9x+0.6x^2-1.5x^3, p2 = 0.3-0.2x+0.4x^3, p3=0.4-0.6x-0.1x^2+0.5x^3.
Replies
2
Views
462
blamocur
blamocur
M
Ineaquality with absolute value
Replies
4
Views
533
stapel
stapel
A
How to find the width of a rectangle bounded by the x axis
Replies
4
Views
687
Steven G
Steven G
shahar
zero by power of zero: Why does zero by zero equal to 1 and not to 0?
Replies
11
Views
1K
topsquark
topsquark
Qwertyuiop[]
Complex numbers: Solve the equation |z|^2 - Re(z^2) + iIm(iz) = 4 - 3i
Replies
1
Views
406
blamocur
blamocur
J
Need help understanding how Euler's totient function works.
Replies
8
Views
987
blamocur
blamocur
O
By expanding both sides of the identity (1+x)^3 = (1+x)^3 (1+x)^2, show that 5C2 = 3C2 + 3C1*2C1 + 3C0*2C2
Replies
2
Views
506
Harry_the_cat
Harry_the_cat
V
Complex number query: "If Z = R + j(omega)L + 1/j(omega)C, express Z in (a+jb) form when..."
Replies
5
Views
892
topsquark
topsquark
Qwertyuiop[]
How to algebraically prove a function is injective/surjective?
Replies
8
Views
1K
Steven G
Steven G
M
During calculating null space from rref matrix some rows are with 1 variable so it give this variable value of zero so...
Replies
2
Views
488
Steven G
Steven G
D
I've come up with my own quadratic equation
Replies
6
Views
736
stapel
stapel
M
Confusing system of equation with four variables: ab+c+d=3, bc+d+a=5, cd+a+b=2, da+b+c=6
Replies
5
Views
928
medali
M
A
Explanation required please: x/40 = y remainder 3, x/7 = y remainder 5, if x > 70
Replies
6
Views
661
APlusMath
A
A
College Algebra: "The surface area S of a hot-air balloon is given by S(r)=4(pi)r2 where..."
Replies
3
Views
666
Steven G
Steven G
H
Functions are confusing. Why is log(x - 2) + log(x + 2) not the same function as log(x^2 - 4)?
Replies
10
Views
979
Helenam
H
B
Can anyone teach me how do you get from right side to left side equation?
Replies
5
Views
526
bbqqcc123
B
D
Prove A is invertible iff A^T is invertible and, in that case, (A^{-1})^T = (A^T)^{-1}
Replies
15
Views
1K
Steven G
Steven G
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