Question 185583
(a)how can this be done?
It can't be.  If A and B are not going to move and the height (vertex) is
not going to move, the parabola is fixed because three points remain fixed.
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(b)is it possable to comply with the engineers instructions and also raise the height of the missile path?
Raising the height will increase the steepness which will not please
the engineers.  Lovering the height is the only way to please them, if
A and B cannot be moved.
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Cheers,
Stan H.