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Homework Help: Prove the following statement:

  1. Apr 14, 2005 #1
    Q. Prove whether or not the following functions are linearly independent.

    1. sin^2x ( "sine squared x")

    2. cos^2x ("cosine squared x")

    3. cos2x

    Please any help is greatly appreciated on these parts:
  2. jcsd
  3. Apr 14, 2005 #2


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    Staff Emeritus
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    Please read the guidelines for posting homework help questions.


    You must have had a thought on this problem already -- surely you know, say, the definition, or a relevant theorem?

    P.S. it's customary to put some sort of punctuation between a trig function and its argument. You probably wanted to say cos 2x or cos(2x), not cos2x, and cos^2 x, not cos^2x.
    Last edited: Apr 14, 2005
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