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6PR = 120 find r i know its 3.. but i duno how to get it mathematically thx

hi could some1 tell me how to do this "how many even numbers of 4 digits can be formed with the figures 3,4,7,8" if repetitions ARE allowed i dont know how to answer perm questions in general if they say repetitions are allowed =( thx guys an explanation of ur working will b helpful too!

Can some1 show the conversions to show that binding energy = 931.5 * [mass defect in u] i know binding energy is calculated in MeV and that E=mc² calculates energy in joules hwoever wen i try to convert it... i dont get 931.5 >.<

wtf u do 4unit and u didnt know how to do odd/even functions????

hehe let me guess ur a prior tutor ? =P we got one in our half yearly .. mayb the teachers dont read the syllabus??

oh man im confused aiyo .. newaiz heres another q i need help with What is the complex locus equation for the ellipse with foci (-1,0) (2,0) which passses through (2,4i) ok i can get the cartesian one out.. but how to put it into the complex locus form for an ellipse i.e : | |z-a| +...

huh wtf now we've got heaps of diff solutions just as soon as i thought it was the imaginary axis... ppl say its just a point on the origin.... ERRR ??!?!

crap~! thx a lot CM_Tutor & co wot i did was squared both sides which is not allowed.. rite?? =P haha mm Re[z] = iz let z = x + iy x = i(x+iy) x = ix - y but x is real thus x = 0 .'. graph y = 0 [sub x = 0] ... shit or do we graph x = 0 woot.. i mean.. shit.. wots the answer

how do you sketch Re(z) = iz ? i let z = x + iy then i get some crap thing =\

thx estel! still need help with : 2. The sum of the angles of a polygon of n sides is (2n-4) right angles, n >=2 and for the things u posted up grey council (do u go to my school? syd boys) 5. (a) Show that sin x + cos x = sqrt(2) * sin(x + pi / 4) (b) Show that the derivative...

1. The cube of the sum of three consecutive integers is divisible by 3 2. The sum of the angles of a polygon of n sides is (2n-4) right angles, n >=2 3. The greatest number of regions that n straight lines can divide a circle is 1/2(n^2 + n + 2), n>=1

umm when u have an odd power of secx u need to do by parts...

A particle is projected to just clear two walls of height 7 m and distance 7m and 15m from the point of projection Prove that if @ is the angle of projection, then tan@ = 3/2 ok i think the question is wrong.. or worded really badly i get tan@ = 1/2 o.o ... and i need help with this...

hey ive realised there arent as many full fee courses on the pdf provided by the uac are there any full fee places offered for actuarial studies at mac ><" thx

he's been away... nehooz...the answer is 7 and 4... ><

"The volume (V) and the surface area (S) of a sphere of radius r are given by V = (4/3)pir^3 and S = 4pir^2 respectively a) Show that dV/dr = S and dV/dt=s (dr/dt) [DONE] b) A spherical ball, of radius 24mm, is immersed in an acid bath and its volume decreases at a rate equal to three...

prolli finishing off more 3u before moving onto 4u in yr12's "term2"

how did u come with the conclusion of expanding cos3x? worked ur way back to get to the answer provided there? in my opinion... i would just use cosx(1-sin^2x) ... takes 3 lines .. compared to ur... 8-10 ...

i have em and i want something in return

waste of money..