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im reading the section about the source-path-sink system and wow, i don't understand it. can someone please explain this in simpler terms? ^__^

why does z^n=1 have a modulus of 1? If w is a complex root of z^5-1=0 with the smallest positive argument, show athat w2, w3 and w4 are other complex roots. prove that a) 1 + w + w^2 + w^3 + w^4 = 0 I've done this bit up to the part where it becomes a zero.......I have no idea how it becomes...

oh my god i am so confused. does anyone have an excel book that they can refer to? I want to ask a question ! Page 104

"Stars Procyon and Betelgeuse are almost equal brightness as observed from Earth. However, Betelgeuse is more than 100 times more luminous than Procyon. Account for these differences. There are several possibilities. If their distances are the same, their either Betelgeuse is much larger...

25.0ml of 0.100 mol L-1 copper nitrate solution is reacted with 25.0ml of 0.1 mol L-1 sodium hydroxide solution Find the mass of the precipitate formed there are two mole values, both which are equivalent to each other. except the ratio of copper nitrate to sodium hydroxide is 1:2. and i...

calculate concentrattion in molL-1 0.71g of calcium chloride-2-water in 250ml of water. Attempt: From - C=n/v n = moles of cacl2.2.h2o n = .71/(40.04+35.45x2)+2(1.008x2+16) n = 4.8 x 10^-3 mol therefore Concentration = 4.8 x 10^-3 / .250 C = 0.0192 mol L-1. Is this right? the answer...

find the locus of a point P(x,y) which lies above the x-axis so that the sum of is distances to the origin and the x-axis is 2.

a point P (x,y) moves so that its distance from the point K(2,5) is twice its distance from the line x=-1. x^2-4x+y^2-10y+29= 4|x^2+1|^2 D:

Y=4x-7 is a tangent to a parabola that has y int -3 and x=1/2 as axix of symmetry. Find the equation of the parabola

find the gradients of the tangents to y=2+5x-3x^2 which pass through the point (1,7)

sketch y=x-2/x^2

Good evening, The latus rectum of a parabola has endpoints (-2, 3) and (6,3). Find two possible equations for the parabola. :) I found the focus to be (2,3). That's all.

Find the square roots of: 1. 2-root5i 2. i

Hey guys, my school is giving us an option to choose our option topic: 1. Q2Q 2. Medical 3. Astro 4. The other one, lol. Forgot what it was. Which one do you recommend, and why? (or rather, which topic did you do, and what is your opinion) Thank you and, happy studying (:

find the three cube roots of each of the following in the form a+ib, where a, b are real a)1 b)-64 c)1/8

Express -root3-i in modulus–argument form. I got 2cis30 - the angle by doing the tan inverse of 1/root3. Answer says 2cis(-5pi/6) it's wrong to say 2cis30 isn't it, because the coordinate is in the 3rd quadrant? can i say 2cis270 instead?

Find the ratio if the point C(-9,7) divides the interval A(1,32) and B(-5,17) externally. Let the ratio be m:n -9= (1)(n)-(-5)(m)/n-m and 7=(32)(n)-(17)(m)/n-m -10n-4m=0 and -25n+10m=0 ...??????

Hello my fellow prelim buddies :D How are you all? Hope you're having a splendid time. What are you guys up to these holidays? Have any specific plans and/or goals you wish to achieve? Or are you chilling? Happy studying! -jnney.

hey guys, hope your studies are going well and have a pleasant time studying these holdiays :) i'm thinking about buying a laptop. mac or pc? what brand? any specific laptop that you recommend? pro/cons? Thanks in advanced.

I contemplated stealing one from my school but i decided I wanted my own copy. LOLjks, someone please tell me you have one. Have a great night! Hope you're all well. :D