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H
HallsofIvy
replied to the thread
PreCalculus Show that 2|[(n+2)^2-n^2] for all integers n
.
For (n+2)^2+ n^2 divisible by 2, I would not use "induction" at all. Instead, by basic algebra, (n+ 2)^2+ n^2= n^2+ 2n+ 4+ n^2= 2n^2+...
Today at 7:21 AM
F
FChan
posted the thread
Sequence Problem
in
Advanced Math
.
I have this GP problem and I have the answer but I don’t understand. Would anyone can help to explain ?
Today at 7:06 AM
C
chrislav
posted the thread
inequality
in
Intermediate/Advanced Algebra
.
Prove : \frac{1}{b(a+b)}+\frac{1}{c(b+c)}+\frac{1}{a(c+a)}\geq\frac{27}{2(a+b+c)^2} Where a,b,c are positive Nos
Today at 6:45 AM
shahar
replied to the thread
Mathematics Operation Axioms
.
order of sizes: a < b < c
Today at 5:21 AM
shahar
replied to the thread
Mathematics Operation Axioms
.
Today at 5:20 AM
A
apple2357
replied to the thread
Domain of composite function question
.
Ok that projective number line stuff is fascinating! And yes, we all have days like that and i hope everyone can see i wasn't trying to...
Today at 4:49 AM
J
JeffM
replied to the thread
Domain of composite function question
.
Actually, I should (and do) apologize. I had a bad day, and the response from Cambridge was irrelevant to your question. So my annoyance...
Today at 4:09 AM
A
apple2357
reacted to
Jomo's post
in the thread
Domain of composite function question
with
Like
.
I misread your question before. No, the final result will not add any new restriction
Today at 3:18 AM
J
JeffM
replied to the thread
PreCalculus Show that 2|[(n+2)^2-n^2] for all integers n
.
Number theory is a field where proofs by induction are very common because proofs by induction cover an infinite number of cases. For...
Today at 3:03 AM
A
apple2357
replied to the thread
Domain of composite function question
.
Apologies, I didn't mean to offend! I sent him the original question, he never responded until last night and in the meantime i posted...
Today at 3:02 AM
A
apple2357
replied to the thread
Domain of composite function question
.
Today at 3:00 AM
wolf
replied to the thread
Mathematics Operation Axioms
.
Could you post a graphic?
Today at 2:43 AM
J
JeffM
reacted to
Jomo's post
in the thread
How do I find out if a line is parallel, perpendicular, or neither using 2 given points?
with
Like
.
Two lines are parallel only if their slopes are both equal or both are undefined. Two lines are perpendicular only if the product of...
Today at 1:56 AM
J
JeffM
reacted to
Otis's post
in the thread
Equation Help
with
Like
.
SaLoose has posted only part of the exercise (part b). We may be missing given information regarding 'lowest degree' and 'leading...
Today at 1:54 AM
J
JeffM
reacted to
Jomo's post
in the thread
Equation Help
with
Like
.
Find the equation whose roots are 1, -2 and 1/2. I don't think so. Who makes up these problems?
Today at 1:54 AM
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