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M
MaxWong
replied to the thread
Laplace Transform of Error Function: Laplace-Transform of (erfc(1/sqrt{t}))
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I don't immediately see a way to use the first identity. I will attempt to show by definition of Laplace transform...
Today at 4:12 PM
M
MaxWong
replied to the thread
Use d'Alembert's Solution to Solve the Wave Equation
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I think you can simply plug in c = \sqrt{81} = 9, f(x) = x^2, g(x) = 3.
Today at 3:53 PM
M
MaxWong
replied to the thread
[math]v_t(x, t)-v_{xx} (x, t)=0 , x\in \mathbb{R}, t>0, v (x, 0) = sin^2(3x), x\in \mathbb{R}[/math] can this be solved using separation of variables?
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I don't think separation of variables works here. This is a 1D heat equation with t > 0, x \in \mathbb R, so maybe try using the heat...
Today at 3:48 PM
M
MaxWong
reacted to
Steven G's post
in the thread
Both solutions seem to be correct
with
Like
.
Whenever this happens just check to see if your results differ by a constant.
Today at 3:26 PM
M
MaxWong
reacted to
Steven G's post
in the thread
I have no idea how to solve this...
with
Like
.
Nicely explained.
Today at 3:24 PM
Steven G
reacted to
blamocur's post
in the thread
Eigen Vectors
with
Like
.
There is an easy way to check correctness of you solution: just use the definition of eigenvalues and eigenvectors.
Today at 3:17 PM
Steven G
replied to the thread
I have no idea how to solve this...
.
Nicely explained.
Today at 3:02 PM
Steven G
reacted to
MaxWong's post
in the thread
I have no idea how to solve this...
with
Like
.
This is, in fact, an integral in disguise. To see this, we rewrite as e^(log f(x)), as you call it, and then simplify...
Today at 3:02 PM
Dr.Peterson
replied to the thread
i need to find the speed of acceleration
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An equation is meaningless unless the variables have been defined. Clearly you don't mean that a is acceleration and p is momentum. What...
Today at 2:54 PM
M
MaxWong
replied to the thread
I have no idea how to solve this...
.
This is, in fact, an integral in disguise. To see this, we rewrite as e^(log f(x)), as you call it, and then simplify...
Today at 1:38 PM
blamocur
replied to the thread
Eigen Vectors
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There is an easy way to check correctness of you solution: just use the definition of eigenvalues and eigenvectors.
Today at 1:20 PM
M
MaxWong
replied to the thread
Discrete math assignment
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We can try to brute force the answer as follows: use \neg for not, \wedge for and, \vee for or and \oplus for xor. Since the function...
Today at 1:17 PM
M
MaxWong
replied to the thread
matrix transformation to generate a sequence.
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Note that \begin{pmatrix}x_n \\y_n\end{pmatrix} = A_1 \begin{pmatrix}x_{n-1} \\y_{n-1}\end{pmatrix}+b_1 Replace all n by n-1 and then...
Today at 1:01 PM
M
MaxWong
replied to the thread
Eigen Vectors
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The correct ones are: Eigenvectors corresponding to eigenvalue 3 are (3, 0, 1) and (1, 3, 0). Eigenvector corresponding to eigenvalue 4...
Today at 12:45 PM
M
mario99
replied to the thread
i need to find the speed of acceleration
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Correction. \displaystyle \bold{v} = \frac{d\bold{a}}{dt} = \frac{d\bold{p}}{dt} So obvious!
Today at 11:34 AM
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