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Otis
replied to the thread
Sin/Cos periodic 2*pi
.
Yes, and we don't need periodicity for that. Many functions output the same value for different inputs. Here's an example: f(x) = x^4 +...
4 minutes ago
H
HallsofIvy
replied to the thread
Sin/Cos periodic 2*pi
.
You seem to be completely misunderstanding what a "function" is! You say "isn't [it] necessary for two function like sinx and...
4 minutes ago
B
Barbados5
reacted to
Dr.Peterson's post
in the thread
Ignore Currencies? Percentage Question
with
Like
.
Yes, you have to convert the currencies to one standard, because their relative amounts determine the weighting of the average. For...
7 minutes ago
K
ksdhart2
replied to the thread
Match the post#
.
0 + 1 + 234 + 5 \cdot 6 + 789 = 1052 9 \cdot 8 + 7 + 654 + 321 + 0 = 1052
13 minutes ago
D
Denis
replied to the thread
Match the post#
.
0! + 123 + 4 \cdot 5 \cdot 6 \cdot 7 + 89 = 1053 987 + 6 + 54 + 3 + 2 \cdot 1 + 0! = 1053 Phewwww......worked hard on that one too!!
14 minutes ago
Otis
replied to the thread
Sin/Cos periodic 2*pi
.
Hello Ryan$. It looks like you're sometimes mistyping the function's name sin as sinx. Also, I think it's best to use function...
25 minutes ago
H
HallsofIvy
replied to the thread
calculus
.
Neglecting air resistance, the only force here is the force of gravity which, at the surface of the earth, gives a vertical acceleration...
26 minutes ago
MarkFL
replied to the thread
The Ambiguous Case of the Sine Law FOM11 4.3 #7
.
I would convert angles to radians, and write (using the Law of Sines)...
30 minutes ago
R
Ryan$
reacted to
topsquark's post
in the thread
Sin/Cos periodic 2*pi
with
Like
.
HallsofIvy had a good post. The way the function sin(x) is defined makes it periodic. If you go around the unit circle once (an angle...
Today at 3:51 PM
R
Ryan$
replied to the thread
Sin/Cos periodic 2*pi
.
So we can have the same function with two different argument ? like sinx=sinx(x+180) and that's why called periodic? I mean periodic...
Today at 3:51 PM
topsquark
reacted to
HallsofIvy's post
in the thread
needing help understanding superposition in math
with
Like
.
I have no idea what "superposition" means here. Are these "v"s vectors and you are referring to vector addition?
Today at 3:48 PM
topsquark
replied to the thread
Can't do this middle schooler problem
.
It doesn't seem to work in any case. Using a + b = 1 try out a = 2. Your expression is negative. If a \neq b then try a = 2, b = 3...
Today at 3:45 PM
topsquark
reacted to
MarkFL's post
in the thread
Telescoping sums
with
Like
.
Okay, having proved the given identity, then we know...
Today at 3:33 PM
topsquark
reacted to
Denis's post
in the thread
where did this term go?
with
Like
.
Become an "expert": https://www.mathsisfun.com/algebra/completing-square.html
Today at 3:31 PM
topsquark
replied to the thread
Sin/Cos periodic 2*pi
.
HallsofIvy had a good post. The way the function sin(x) is defined makes it periodic. If you go around the unit circle once (an angle...
Today at 3:27 PM
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