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    ylzik's Avatar
    ylzik Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Mar 10, 2009, 06:48 AM
    find the value of h
    how do I find the value of h in this equation:

    v= (63.96 + 0.52h^2) h :confused::confused::confused:

    thank youuuuuuuu! :)
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
    Ultra Member
    		  
    #2

    Mar 10, 2009, 07:16 AM

    If you multiply it out and subtract "v" from both sides, you have a cubic equation.

    0.52 H^3 + 69.96h -v = 0

    There is a general formula to find its roots (similar to the quadratic equation's solution, but more complicated). Here's a link on Wikipedia that might be useful.

    Cubic function - Wikipedia, the free encyclopedia

    Here is a calculator for solving cubics (and quadratics and quartics):

    http://www.freewebs.com/brianjs/ulti...tionsolver.htm

    Of course, you need to know the value of "v" to "solve" it with this solver.
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