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1. The maximum value of 10x-5x2-1 …

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1. The maximum value of 10x-5x2-1 is

    • Posted by Konda Thirumala Rao 7 years, 6 months ago

    Entrance Exam > JEE main > Mathematics
    • 2 answers

    Bipin Dubey 7 years, 5 months ago

    = -5 ( x2 - 2x) - 1

    = -5 (x2 - 2x + 1 - 1) - 1

    = -5 (x - 1)2 + 5 - 1

    = 4 - 5 (x - 1)2 

    Since ( x - 1 )2 >= 0

    -5 (x - 1)2 <= 0

    4 - 5 (x - 1)2 <= 4

    0Thank You

    Payal Singh 7 years, 6 months ago

    4

    0Thank You

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