Answer:
You have to look for the y-value for a given x-value.
f(-2) = 2
f(0) = 3
f(4) = -1
The answer is 65880000 and here are the steps
5y-5y^2-5+2+2y+3y^2-1
collect like terms
7y-2y^2-4
reorder the terms
-2y^2+7y-4
-2y^2+7y-4 is your final answer, I hope this helps!
The vector pointing from (2, 1) to (1, 3) points in the same direction as the vector . The derivative of at (2, 1) in the direction of is
We have
Then
The vector pointing from (2, 1) to (5, 5) has the same direction as the vector . The derivative of at (2, 1) in the direction of is
so that
Solving the remaining system gives and .