For the following exercises, rewrite the parametric equation as a Cartesian equation by building an x - y table. 29. { x ( t ) = 4 t − 1 y ( t ) = 4 t + 2
For the following exercises, rewrite the parametric equation as a Cartesian equation by building an x - y table. 29. { x ( t ) = 4 t − 1 y ( t ) = 4 t + 2
Find a pair of parametric equations for y=
3(2-5)² +2. Show all your work for full credit.
Find the parametric equation for the line where the planes
-7x + 7y - z = 20 and 2x + 7y + 2z = 23
intersect.
r(t)
=
+ t
There are two possible answers or .
Show me your work how you can have either of the answers by using a math editor or uploading the image of your work.
A major league baseball pitcher throws a pitch that follows these parametric equations:
x(t) = 146t
y(t)=-16t² + 6 + 5.
The time units are seconds and the distance units are feet. The distance between the location of the pitcher and homeplate (where the batter stands) is 60.5 feet. Give EXACT answers, unless instructed otherwise.
(a) Calculate the horizontal velocity of the baseball at time t; this is the function x'(t)= | 146
(b) What is the horizontal velocity of the baseball when it passes over homeplate? 146
(c) What is the vertical velocity of the baseball at time t; this is the function y'(t)=-32t+6
(d) Recall that the speed of the baseball at time t is
s(t)=√ [x '(t)]² + [y' (t)]² ft/sec.
What is the speed of the baseball (in mph) when it passes over homeplate?
(e) At what time does the baseball hit the ground, assuming the batter and catcher miss the ball?
(f) What is the magnitude of the angle at which the baseball hits the ground?
mph.
ft/sec.
ft/sec
ft/sec.
sec.
rad. (This…
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