JohnD

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140 Answers

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1
Liapunov Stable question
6
Real-valued 2D Fourier series?
2
How can I prove that the Gibbs phenomenon overshoot for a Fourier Series is approximately 9%?
0
Given $x(t) = u(t)$ and $h(t) = \cos(\pi t)u(t)$, how do we find the response $y(t)$?
2
What is the operator $\bigoplus$ in the context of function spaces?
1
Determine equilibrium temperature distribution.
2
Solve Burgers' equation
1
Solve the partial differential equation $u_t + uu_x=0$
2
Perpendicular line passing through the midpoint of another line
1
$\int_0^{\infty} \frac{\sin(x)}{ \sqrt{x}}dx$
3
Rules pertaining to the Integration constant
0
Does $e_n(x)=\exp\left( \frac{i \pi n}{N}x \right)$ define an orthonormal basis of $L^2(-N,N)$?
1
Find the absolute maximum of $\frac{x+\sin(x)}{x}$
1
find the equation of the line tangent to the curve $y=\sqrt{x}$ at the point $(1,1)$
4
Orthogonal polynomials and Gram Schmidt
1
Why doesn't this DE's interval of definition include negative $x$ values?
1
${d^2\over dx^2}$ notation problem
2
Modifying Limits of Definite Integral
4
Where is the tangent line to this curve horizontal?
1
What is the average rate of change over this interval?
2
What symbol should I invoke in order to present the angle between two vectors?
2
Operator question. $\sigma(T)\neq \varnothing.$
3
Integral $\int \frac{x}{\sqrt{x^2+2}} \, dx$ via substitution
1
explanation of slope in a graph?
1
How to approach graphing vector functions?
2
Let $V$ be the inner product space consisting of linear polynomials
2
Trying to understand Hilbert Spaces…
1
Intuition on the curl formula
3
Unit ball in $C[0,1]$ not sequentially compact
0
Finding a weighting function (Sturm-Liouville problem)
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