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Math Help

Discussion in 'Homework Help' started by shermaine, Apr 29, 2009.

  1. shermaine

    shermaine New Member

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    Hi,

    I got this equation (T1^2 + 7T1 - 2) / (8 + 4T1 + T1^2)
    How do i solve the T1?
    Can i use 8 + 4T1 + T1^2 = T1^2 + 7T1 -2?
    Then 8+2 +4T1 -7T1 + T1^2 - T1^2?
    I tried this, but i cant get the right ans
     
  2. Roff

    Roff Well-Known Member

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    That's not an equation.:confused:
     
  3. shermaine

    shermaine New Member

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    how should i work it out and use quadratic to find
     
  4. dave

    Dave New Member

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  5. Roff

    Roff Well-Known Member

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    I repeat - It is not an equation! An equation has an equal sign in it.
     
    Last edited: Apr 29, 2009
  6. shermaine

    shermaine New Member

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    Hi Roff,

    Thanks! I typed wrongly.
    The equation should be :
    tan(kl) = [4 + (2T1)^2 / [2T1^2 + 7T1 - 2]
    How should i solve?
    Please advise. Thanks.
     
  7. Roff

    Roff Well-Known Member

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    What is kl? Don't you have one equation and 2 unknowns? That can't be solved.
     
  8. shermaine

    shermaine New Member

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    k is a constant which is 2pi/wavelength and L is the length
    The answer for T1 = 5.1623 and -1.1623, how do i get these values?
    Please advise. Thanks.
     
  9. Roff

    Roff Well-Known Member

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    How do you solve it if you don't have values for k and l?
     

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