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02/02/13 3:19pm

I need to solve a quadratic equation of A t2 + B t + c = 0 (finding the value of t when the equation is equal to zero) A and c is a constant while B is a long list of number.

Is there a way to solve the equation and pick out only the positive value? Because t stands for time and I don't want the negative value.

I've tried time = (
yVelocity PlusMinus[Sqrt[(-yVelocity)^2 - (4*4.902*(-2.7))]])/9.81 //

which is the solution of the quadratic equation using the quadratic formula. I end up with a long list of number but couldn't manage to pick out only the positive number.

Help is very much appreciated. Thanks very much.

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Subject (listing for 'Solving quadratic equation')
Author Date Posted
Solving quadratic equation matt 02/02/13 3:19pm
Re: Solving quadratic equation Bill Simpson 02/02/13 11:41pm
Re: Solving quadratic equation yehuda 02/03/13 03:23am
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