Recent content by Needhelp2013

This is the question I have been asked in full: A resistor R = 15 ohms an inductor of L=2 henries and a battery of E volts are connected in series with a switch S. At time t=0 the switch is closed and the current I=0. Use Euler Method (Excel or hand but show all work on assignment) to find I at...

How do you differentiate kirchhoffs law which seems to be I = (R+L(di/dt))/V(t) I need it to be a differential equation so then I can use eulers method.

Homework Statement What is this question en example of: Given u=lnsin(xy) show that Homework Equations du=cot(xy)(ydx + xdy) The Attempt at a Solution I think it is total differentiation.

Thanks again.Is the next step now to bring the ∂z over to the other side and that is it complete?

Is your equation meaning this ∂y/zx = ∂x/zy any other help would be great becuase I am struggling to realize where to go next.

I am just trying to work out how to read the latex way of writing equations. Ill get it. Thanks for that.

Yes the equation under "Relevant Equations" is what I'm trying to show. There could be a simple solution but I'm missing it. I tried substituting what 'z=' into the laplace equation but that didnt get me anywhere.

Thanks for spotting that.No I am pretty lost to be honest. I am fairly new to this. I believe I am working with the Laplace equation though

Yes I did, that's it sorted now.

Homework Statement Given that z = √3x/y show that: Homework Equations ∂2z/∂x∂y = ∂2z/∂y∂x The Attempt at a Solution