Someone know the coefficients of friction of wood in wood, wood in metal, metal in wood and metal in metal, calculated with the tangent of the resulting angle of the inclined plane method?
Hi!
I have to calculate the Fourier coefficients c_n = \frac{1}{2\pi}\int_{-\pi}^{\pi}f(x)e^{-inx}dx and the Fourier series for the following function:
f(x)=
\begin{cases}
\frac{2}{\pi}x + 2 & \text{for } x\in \left[-\pi,-\pi/2\right]\\
-\frac{2}{\pi}x & \text{for } x\in...
I need to show that the solution of
a_n = c_1a_{n-1} + c_2a_{n-2} + f(n) (1)
is of the form
U_n = V_n + g(n) (2)
where V_n is the solution of a 2. order linear homogenous recurrence relation with constant coefficients.
Could I use the argument that if (2) is a solution...
Hallo everybody.
I have a square matrix where the coefficients of the diagonal are 1, while the others are very small (say 10^-6). Of course the determinant of this matrix will be always one.
This is my problem:
the coefficients are functions of a variable (w, complex variable). So, the...