August 2017

Hi, can someone help me with my homework in circuits? After getting the KVL and collecting the equations, i got these 3 equations, i can't quite combine them to get a value for IA,IB, and IC.

Eq.1 24I_A-15I_B = 5
Eq.2 12I_B-20I_C+15I_A=5
Eq.3 -27I_C+20I_B=-5

http://imgur.com/j5xTT0v

xdx + (sin²(y/x)(ydx-xdy)) = 0

The radial stress p at distance r for the axis of the thick cylinder subjected to internal pressure is given by p + r (dp/dr) = A − p where A is a constant. If p = p₀ at the inner wall r = r₁ and is negligible (p = 0) at the outer wall r = r₂ find an expression for p.

kindly help me with my homework. eliminate the following arbitrary constants...
y= x^2 + c1 e^3x + c2 e^3x.

Hello Gents,

Q:/ What is the reason for letting the inner boundary condition = (-1) when solving the radial flow of infinite form of diffusivity equation, and I would like to know what would happen if I didn't equate it with (-1).

As in the attached pic: https://i.imgur.com/AVesmHM.png

and here is the original pdf if you want: http://www.pe.tamu.edu/blasingame/da..._DimLssVar.pdf