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#1 Re: Help Me ! » Please help... » 2009-06-28 16:42:43

hi bobbym, thanks for the answer.

#2 Re: Help Me ! » Please help... » 2009-06-25 18:10:56

a + jb = √[j*w*R*C + j²*w²*L*C]
          = √[j²*w²*L*C*(R/(jwL)+1)]
          = √j²*√w²*√(L*C)* √[R/(jwL)+1]
          = j*w*√(L*C) * √[R/(jwL)+1]
          = after here i dont have any idea for next step dunno

#3 Re: Help Me ! » Please help... » 2009-06-24 23:26:02

Hi, i think i make another mistake again, tongue
how about as below?

y =jw√(LC) *(R/(2jwL) + 1)
y = R√(LC)/2L + jw√LC

if my equation is wrong, can you help me to solve this equation?

#4 Help Me ! » Inverse modular arithmetic? » 2009-06-24 15:51:57

yscheok
Replies: 1

Hi all,

normally dθ/dt is the inverse of ∫θ dt,

what is the inverse name for modular arithmetic?

#5 Re: Help Me ! » Please help... » 2009-06-24 13:50:30

hi bobbym,

sory for that, is √LC. smile

=jw√(LC) *(R/2jwL + 1)
= R√(LC)/2L + jw√LC

#6 Re: Help Me ! » Please help... » 2009-06-24 00:09:24

Hi all,

thanks  for reply. smile
For J = i that notation is used in electronics. actually this is the transmission line equation and i would like to find the a and b equation. below is some step to get the a and b answer, i not sure whether is correct or not? can you all help me?

y = a + jb = √[(R+jwL)(G+jwC)]

y = √[RG + jwRC + jwLG + j²w²LC]

when G=0,

y = √[jwRC + j²w²LC]
  = √[j²w²LC  (R/jwL + 1)]
  = jw√LC *(R/2jwL + 1)
  = R√LC/2L + jw√LC

a= R√LC/2L  ,     b= w√LC



I have another question would like to check with you all regarding the Modular arithmetic. may i know that is the name for the "inverse Modular arithmetic" and what is the formula for it?

#7 Help Me ! » Please help... » 2009-06-18 21:03:18

yscheok
Replies: 12

hi, any one can help me to solve below equation? i would like to know that what is the derivation for a and b.

y = a + jb = √[(R+jwL)(G+jwC)]

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