According to Newtonian mechanics, this problem may be expressed
as a second degree polynomial, where T is time in seconds.
f(T) = (-9.81 +• 2)7* + 20T + 2
Starts the quadratic
9.81 I+/-II ENTER I
Stores (-9.81/2) in A.
Stores 20 in B.
Stores 2 in C and cal
culates X (which in this
case is also known as
| R/S |
Calculates the other
Note that since a negative time has no meaning in the context of this
problem, the first result, 4.1751 seconds, is the meaningful answer.
.Example 4. Find the roots of the following second-degree polyno
mial using the program as it is listed. Then change the sense of the
comparison at line Q12 so that the second root is computed first and
then the results are compared. Remember to restore the original line
or clear the program when you finish this example.
x2 + (3 x 106)* +1 = 0
Stores 1 in A.
Stores 3 x 106 in B.
Stores 1 in C and cal
culates the first root.
12: Mathematics Programs