Posted by Jul on Saturday, March 21, 2009 at 7:48pm.
Consider the parametric curve given by the equations
x(t)=t^2–14t–4
y(t)=t^2–14t+48
How many units of distance are covered by the point P(t) = (x(t),y(t)) between t=0, and t=11 ?

Calculus  bobpursley, Saturday, March 21, 2009 at 7:50pm
distance, or displacement? There is a pronounced difference in those.

Calculus  GanonTEK, Saturday, March 21, 2009 at 7:52pm
well to get a distance between points we use the distance formula but first we need the points themselves.
Point 1 is found by subbing t=0 in for t in x(t) and y(t)
Point 2 is found by subbing t=11 in for t
in x(t) and y(t)
I'll do point 1
x(t) = (0)^2  14(0)  4 = 4
y(t) = (0)^2  14(0) + 48 = 48
so point 1 is (4,48)
Hope that helps
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