Homework Statement
The picture is an closed loop amplifier, the question is simple: find the closed-loop voltage amplifier of the circuit
Homework Equations
Av = v0/v in = - (R2/R1)
The Attempt at a Solution
If R2 is just simply a bunch of resistors connecting crazily, then...
the problem is given exactly above, nothin say about first obtant (i also thought about 1st obtant, too when i read the word "portion of", but it seems not that) so i guess the intergral is infinite is right, maybe the instructor gave the wrong problem. I wasn't sure so i asked, thank you for...
Homework Statement
Evaluate \int\int (x^2 +4y + z)dS where S is the portion of the plane 3y +2z = 6 with 0<x<3
Homework Equations
choosing x, y as variables
dS = \sqrt{}(partial dz/dx)^2 + (partial dz/dy)^2 +1
The Attempt at a Solution
If i choose x, y as variables or x, z as variables...
I tried to do part and this is how i done (for the first intergral):
u = x, du = dx, v = 1/2e^(2x), dv = e^(2x)dx
uv - \int vdu
1/2xe^(2x) - \int 1/2e^(2x)dx
1/2xe^(2x) - 1/4(e^2 -1 )
x runs from 0 to 1, but 1/2xe^(2x) is not in the intergral part, so how to eliminate x?
very...
Intergral problem! plz help!
Homework Statement
\oint(x: 0 to 1)\oint(y: \sqrt{}(1 - x^2) to e\overline{}x) xydydx
The region bounded by y = e\overline{}x, y = \sqrt{}(1 - x^2), and x =1
3. The Attempt at a Solution
i got stuck when i came to the part: 1/2 \oint(x: 0 to 1)...
what is speed of o-ray and e-ray and how to obtained??
Homework Statement
that's all for the questions. How do i calculate speed of o-ray and e-ray (for example, e-ray and o-ray of calcite)
thank you
Homework Equations
none
The Attempt at a Solution
surfing web and reading book
does that mean the current won't go through capcitor branch? and that means if i want to find resistance of the circuit, it's simply R?(nothin to do with C)
and wat about time constant? T = RC? will it be the same like when capacitor n resistor connect series?
Homework Statement
the title says everything, any formula that to find resistance in a DC circuit of one resistor and one capacitor connect parallel, as well as the current through each of R and C (the known values are R C and V)
Homework Equations
seem to me i = (V/R)e^ (-e/RC), but...
the attachment is pending, so no one could open it (i just realized), so i am go ahead host it on imageshack and post the link here, hope everyone would help me
http://img519.imageshack.us/my.php?image=85119635si7.jpg
Homework Statement
hello everybody, i had hw prob due tommorrow, but i couldn't solve, the attached file is the image of the problem (it absolutely has no virus). all known values are labeled in the picture (V, R (same for all), C1 and C2). The questions are: find curren I, and time...