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    c.ram13's Avatar
    c.ram13 Posts: 1, Reputation: 1
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    #1

    Jun 8, 2011, 04:48 PM
    verify
    verify 2x-tanx=tanx sec 2x
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Jun 9, 2011, 05:55 AM
    Quote Originally Posted by c.ram13 View Post
    verify 2x-tanx=tanx sec 2x

    You have an error in your formula - for most values of x the two sides are not equal:
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