Free-Falling Object In Exercises 37 and 38. use the position function s ( t ) = − 4.9 t 2 + 250 which gives the height (in meters) of an object that has fallen for t seconds from a height of 250 meters. The velocity at time t = a seconds is given by lim t → a s ( a ) − s ( t ) a − t Find the velocity of the object when t = 4 .
Free-Falling Object In Exercises 37 and 38. use the position function s ( t ) = − 4.9 t 2 + 250 which gives the height (in meters) of an object that has fallen for t seconds from a height of 250 meters. The velocity at time t = a seconds is given by lim t → a s ( a ) − s ( t ) a − t Find the velocity of the object when t = 4 .
Free-Falling Object In Exercises 37 and 38. use the position function
s
(
t
)
=
−
4.9
t
2
+
250
which gives the height (in meters) of an object that has fallen for t seconds from a height of 250 meters. The velocity at time
t
=
a
seconds is given by
Consider the following system of equations, Ax=b :
x+2y+3z - w = 2
2x4z2w = 3
-x+6y+17z7w = 0
-9x-2y+13z7w = -14
a. Find the solution to the system. Write it as a parametric equation. You can use a
computer to do the row reduction.
b. What is a geometric description of the solution? Explain how you know.
c. Write the solution in vector form?
d. What is the solution to the homogeneous system, Ax=0?
2. Find a matrix A with the following qualities
a. A is 3 x 3.
b. The matrix A is not lower triangular and is not upper triangular.
c. At least one value in each row is not a 1, 2,-1, -2, or 0
d. A is invertible.
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