Recent content by Novark

I'm doing some practice problems, and I can't seem to figure out where to even begin with this one. I've tried solving for R_{T} (Thevenin resistance) by removing the 9V source and adding a 1V test source across the load, and I've also tried solving for R{_T} by leaving the 9V source in the...

Oh, I see it now. I totally misunderstood the fact that they were simply substituting i0 = i1 - i2 into the third mesh equation. Thanks :-)

I understand that part, but how did they derive the equation below that line?

I understand everything up to the point which I've marked in red... Can anyone explain those few lines? I would greatly appreciate it! Thanks.

Ah, that's right. Not sure how I made such a silly mistake. Thank you.

If that's the case, then won't I get: 6 = i + (i/4) + (2i/8) = (5i/2) Which would give: i = 12/5. Am I missing something?

[Solved] Homework Statement Homework Equations KCL, KVL, Ohms Law The Attempt at a Solution 6 = i + (i/4) + (v/8) I just can't get another equation that relates v & i. Any suggestions? Am I going about this the right way?

Homework Statement For the linear circuit shown, given that the current I in the 0.9 K\Omega is 10mA when Vs = 100V: (a) Predict I using the proportionality property for: Vs = 25V, -12V, and 145 V respectively. (b) Use Thevenin’s theorem across terminals a and b. Find I in terms of Vs and...

Makes perfect sense now! Thanks again LC!

Still no luck in figuring this one out... Anyone have any ideas?

I just checked the answer at the back of the book, it gives the following answers: {\mu}(y) = \frac{e^{2y}}{y} xe^{2y}-ln|y| = c y = 0 I've written the question down correctly, too. Do I have an error in my math anywhere? I've checked it over, and I think it is correct... Any ideas?

Thanks for the reply LC - I understand what you're saying. In this case, however - my professor said that the integrating factor \mu is a function of y only. How should I proceed with finding my function \mu by integrating with respect to y, and how will this affect the rest of the problem?

Finding the integrating factor (ODEs) [Solved] Working on this problem, I can't figure out why we take the derivative of \mu with respect to y, and what to do when our integrating factor is a function of both x and y. In the case below, it ended up being separable, but what can you do if it's...