Answer:
a) 
b)
Step-by-step explanation:
We are given in the question:

F(x,y,z) = (y, -x, z)
a) 
We differentiate with respect to t.

b) F(c(t))
This is a composite function.


I believe you don't need to do any work at all except to divide everything by 25%.
I hope I helped you out!
<span>By multiplying the first function with number 5, the graph will stretch by the order of five, meaning that in the second graph every value of the x will correspond to the 5 times bigger value of y than in the first case. Due to the +6 component, the second graph shifts to the left by 6 units.</span>
<span>the area of Alaska - 1 700 000 square kilometers
and we are told that the land area of Florida is 1/10th the size of Alaska. Therefore land area of Florida is equal to 1/10th of 1 700 000
that's 1 700 000 / 10 = 170 000 km</span>²<span>
therefore land area of Florida is 170 000 km</span>²