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1. Solving 2 inequalities with imaginary numbers?

I have 2 equations, imaginary ones, and 2 unknowns....trying to solve for them..but the answer i got, works with one, but not the other: i*Z1 - i*Z2 = -2 - i Z1 + 3i*Z2 = 4 + 7i where i is the imaginary number, and Z1 and Z2 are the 2 unknowns the answer i got: Z1 : 1.33333 +...
2. Planar graphs with minimum degree

ok, here is the question: Let G be a graph with minimal degree \delta(G) = 5, but suppose there exists only one vertex v\in V_{G} such that d(v) = \delta(G). Prove that G is not planar. ok, i can do this visually. if i draw the vertex v and its edges to its points, and then draw points...
3. Strong primality test ?

strong primality test ... ?? ok, bear with me ... we learned weak primality tests (given n and base a,::: a^(n-1) mod n ::: if it does not equal 1, then its composite, if it equals 1, then MAYBE prime) ... then we learned strong primes .... think of n-1 = m2^k when m is odd. test ::: a^m...
4. Graph theory: quick question(s)

what's the difference between a subgraph and an induced subgraph? looking here: http://mathworld.wolfram.com/InducedSubgraph.html how is the figure K8 ? isn't that K10 ?? also, what is a spanning subgraph?
5. Clock/modular arithmetic anyone?

anyone familiar with this, along with some RSA and calculating large powers with modular arithmetic (im lost at the name of it currently). i have attached the test that I took last week ... he allows us to take home the exact same test home, and do it again, and he combines the grades ...
6. Positron in a magnetic field help

some more basic homework help!! can you guys point me in the right direction, where to start? (grrr, so freakin lost in this class) 11. A 22.5-eV positron (positively charged electron) is projected into a uniform magnetic field B = 455[mu]T with its velocity vector making an angle of 65.5...
7. How much

how much .... seriously, how much bandwidth is used up every month? is it possible to allocate some of that bandwidth elsewhere? ie...PF.com and a member has his own website with xxx bandwidth each month. the member hardly uses any of his bandwidth, and maybe could somehow "donate"...
8. What is the difference between the potential difference, and its emf?

ok, i guess i didnt see this forum ... i posted in another forum my question: https://www.physicsforums.com/showthread.php?s=&threadid=7593 ok, im taking engineering physics II ... unfortunately, im forced to take this as part of my COMPUTER SCIENCE degree ... (why i have no idea..stupid...
9. Whats the difference?

ok, im taking engineering physics II ... unfortunately, im forced to take this as part of my COMPUTER SCIENCE degree ... (why i have no idea..stupid, as i dont really care how many newtons of force it takes me to push a key on the keyboard, and how much current it takes to go from the keyboard...