Recent content by nekteo

o! i got the 1st question... Thx! is the 2nd ques also using the same method? Cheers! Kenneth

prove that if ABC are nonsingular matrices, A) (AB)^{T} = B^{T}A^{T} B) (ABC)^{-1} = C^{-1}B^{-1}A^{-1} I attempted to solve it by creating a random matrices by my self and solved it, however, my teacher demand an answer without "creating" a new matrices by our self...

Homework Statement Given that Z is a complex number with condition |Z-1|+|Z+1|=7 Illustrate Z on Argand Diagram and write out the equation of Locuz Z I attempted to figured out the equation of locus Z, |Z-1|+|Z+1|=7 |x+yi-1|+|x+yi+1|=7 \sqrt{}[(x-1)^2+y^2] + \sqrt{}[(x+1)^2 + y^2] =...

i think there is no concrete answer for that. 60 ms-1. u can't actually differentiate 60, without the particle velocity equation, do you?:confused: i that case, i think you will have to find it's overall time, t and divide 60 by t:cool:

thanks, great resources...

o... now I get it! thanks for your help...

so, is there any other force beside the Earth gravity that pull the moon away from Earth? Such as, the Sun?

i'm sorry, erm... not 1.5, it's the 3V actually...(i'm confused!) what is the voltage of 3 and 10000 The question told me the voltage is 10000, y still need to use formula, V = IR to find the V which is 3V? What is the differences between the value of voltage provided by the question and the...

a cable with total resistance of 2 ohms used to transfer 15000W of electrical power with electrical potential of 10000 V. How much electrical energy is lose in the cable after transferring 2 hours of electrical power? ------------this is how my teacher taught me, but still...

i want to ask, where is a good place (university) to study engineering?