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Hints to solve following nonlinear equation please?


y=-4.9x^2+20x+10
9.8x+y=20

  • math -

    substitute y = 20 - 9.8x
    into the first equation:

    20 - 9.8x = -4.9 x^2 + 20x + 10

    4.9 x^2 - 29.8x + 10 = 0

    x = 5.725 or 0.356

    and you can get y.

    These are strange equations to "solve" since one is the equation of motion of a body, and the other is the equation of its velocity.

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