Find the equation of the curve COD assuming it is of the form y=ax^2n. C(-60,18) O(0,0), D(40,8). How on earth do i even do this question???
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Originally Posted by xwrathbringerx Find the equation of the curve COD assuming it is of the form y=ax^2n. C(-60,18) O(0,0), D(40,8). How on earth do i even do this question??? Plug in your points. This will give you tree equations. Then solve the system of thes equations for numbers a and n.
hmmm could you please show me how to simultaneously solve these... I've got 18 = a * 3600^n AND 8 = a * 1600^n which becomes 10 = (3600^n - 1600^n) * a
Last edited by xwrathbringerx; September 26th 2009 at 04:09 PM.
Originally Posted by xwrathbringerx hmmm could you please show me how to simultaneously solve these... I've got 18 = a * 3600^n AND 8 = a * 1600^n which becomes 10 = (3600^n - 1600^n) * a try dividing the two equations instead of subtracting them.
1I've got 18/3600^n = 8/1600^n but I dont know how to go about solving n ....I tried cross multiplying
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