Asked by F(x)

the function f(x) is the height of a model rocket x seconds after launch. the rocket reaches its maximum height in 2 seconds and hits the ground at 4 seconds. what is the practical domain for the function f(x)?
Answered by bobpursley
0=<x<=4.0
Answered by Anonymous
Bobpursley would that mean all whole numbers in [0,4] or all real numbers OR all intergers in [0,4]? Or would it just be [0,4]
Answered by Anonymous
the function f(x) is the height of a model rocket x seconds after launch. the rocket reaches its maximum height in 2.5 seconds and hits the ground at 5 seconds. what is the practical domain for the function f(x)?
Answered by bobpursley
the domain of x is all values, integer or not, between zero and 4 seconds, but definition those are real numbers. We do not time in the complex domain. As "practical", before time zero, it was not moving, nor was it moving after 4 seconds. If it hits the ground at five seconds, instead of four seconds,
0=<x<=5
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