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Recent content by whynot910

  1. W

    List of typical interview questions

    Re: interview materia there is a book about interview, u can search on the forum.
  2. W

    dc gain of the transfer function ?

    what is dc gain SkyHigh: does time to infinity mean f=0Hz since f=1/T?
  3. W

    Help me plot 256 values from 0 to x that follows exponential curve

    Re: Exponential curve besides using matlab, u also can programing by C. it is very simple.
  4. W

    Simulating Wireless Communication Systems Practcal Model C++

    Re: Simulating Wireless Communication Systems Practcal Model ISBN: 0130222682. Any one can help? Best regards
  5. W

    Euler's rule e^iQ = cosQ+ isinQ

    if u want to prove it, u should use talor series.it is easy.
  6. W

    Solution Manual of ludwig and bretchko needed

    have u searched it on the forum: ebook up &down
  7. W

    What's the name of (X+1/X)≥2 equation?

    Re: An inequality in that inequality, the x must be larger than 0. and u can prove it just use the basic inequality a^2+b^2≥2ab
  8. W

    exponential function periodic or not

    if x=a+jb,j=sqrt(-1), e^x is periodical so long as b is not equal 0
  9. W

    Is there a magnetic field inside a perfect conductor?

    Re: Perfect conductor i think the current should flow along the surface of the pec.
  10. W

    Help me solve an algebra problem

    Re: algebra problem an algebra polynomial equation containing degree 4 or less can be solved by a formula in terms of radicals.
  11. W

    Is geometry fun to study?

    i believe the geometry is very funny. but it is no easy, u must master many skills,take lots of practice.
  12. W

    Need help to solve this

    what justin999 is right, this kind of problems can be solved by high schcool algebra knowledge.
  13. W

    Can anyone solve this

    u should square the two ends of the equation, then move the terms containing square root on the end of the equation, let others on the other end of the equation, then solve the equation. at last,ushould check the solution. if the solution should be real number,then give up the minus term.
  14. W

    what is the RMS bandwidth, or equivalent noise bandwidth?

    Re: what is the RMS bandwidth, or equivalent noise bandwidth u can find details in the book about random signal processing
  15. W

    [help] LNA, Mixer bias circuit.

    i believe whether taking parasitics into account just depends on ur frequence and ur size
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