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britbrat4290 Group Title

Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal. cos x - cos x sinx = cos3 x pi/4 or pi/2 ??????

  • 11 months ago
  • 11 months ago

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  1. Psymon Group Title
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    cos(3x) or cos^3(x)?

    • 11 months ago
  2. amistre64 Group Title
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    cospi/2 = 0 soo thats not it

    • 11 months ago
  3. britbrat4290 Group Title
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    it would be 0... thank u

    • 11 months ago
  4. amistre64 Group Title
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    now that depends on of its \(\cos^3x\) or \(\cos 3x\)

    • 11 months ago
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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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