Intermediate/Advanced Algebra

For more advanced algebra topics, including Algebra II and Pre-Calculus.
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For sqr mtrx A w/ A^p=0 (p some natural), prove (I-A)^(-1) = I + sum[k=1,p-1] A^k
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3
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2K
Ishuda
I
J
Linear algebra and REML: Prove that var(beta-hat) = (X' Sigma^{-1} X)^{-1}
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0
Views
805
jlmac
J
E
Q regarding how 2° / 360 = 100’ / 2π(R) is simplified to R = 9000 / π = 2866.24’
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1
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2K
Harry_the_cat
Harry_the_cat
S
Precalculus: Represent the sequence -3, 1, 5, 9, 13, 17, 21 using sigma notation.
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10
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4K
Ishuda
I
S
short help: need an intermediate step in finding determ. of matrix
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2
Views
1K
stapel
stapel
N
Help with radicals: find equiv. expr. for (cbrt(xy^2)*xy)/(cbrt(sqrt(x^4y^2))
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3
Views
1K
Ishuda
I
M
A little help...Is it possible in Algebra....
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2
Views
1K
Mikkey
M
P
Profit and Cost: R(x)=25x-0.01x^2 C(x)=4x-20; Determine the profit function P(x)
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3
Views
2K
Harry_the_cat
Harry_the_cat
S
Find the variable: Find 'a' so ax+y=-5, -1/3x-2y=-1 has no sol'n.
Replies
6
Views
3K
Johulus
J
J
Displacement: Find the function for the form y=2 sin(2x+c) that passes through (-π/8,
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3
Views
5K
stapel
stapel
O
Levi just retired, and has $710,000 to invest. A very safe Certificate of Deposit...
Replies
1
Views
2K
mmm4444bot
mmm4444bot
W
radicals question
Replies
2
Views
1K
stapel
stapel
V
Transposition problem! solve x/y=(1+r^2)/(1*r^2) for r
Replies
7
Views
2K
Vulcan
V
C
Subtracting Rational Expressions
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2
Views
1K
Chocobitties
C
X
Rearranging an equation: 56.25 = (0.0064 * y) + [(y *37 -156) * 0.138 / 37] + y
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3
Views
1K
XX32
X
I
Different forms of complex numbers
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2
Views
2K
stapel
stapel
S
4 Sequences: Floor(sqrt(n)); a=1,b=5,c=a+b,etc; 1,1+1,(1+1)*1,(1+1)*1+2,etc; ...
Replies
5
Views
3K
stapel
stapel
K
Triangle Building Equation
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1
Views
2K
Ishuda
I
W
Please Prove that ||x+y||=||x-y|| then <x,y>=0
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1
Views
923
Deleted member 4993
D
D
Simplifying Rational Expressions
Replies
6
Views
1K
Steven G
Steven G
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