Computing directional derivatives with the gradient Compute the directional derivative of the following functions at the given point P in the direction of the given vector . Be sure to use a unit vector for the direction vector. 21 f ( x , y ) = 4 − x 2 − 2 y ; P ( 2 , − 2 ) ; 〈 1 5 , 2 5 〉
Computing directional derivatives with the gradient Compute the directional derivative of the following functions at the given point P in the direction of the given vector . Be sure to use a unit vector for the direction vector. 21 f ( x , y ) = 4 − x 2 − 2 y ; P ( 2 , − 2 ) ; 〈 1 5 , 2 5 〉
Solution Summary: The author calculates the directional derivative of the function f(x,y,)=sqrt4-x2-2y at the point P (2,
Computing directional derivatives with the gradientCompute the directional derivative of the following functions at the given point P in the direction of the given vector. Be sure to use a unit vector for the direction vector.
21
f
(
x
,
y
)
=
4
−
x
2
−
2
y
;
P
(
2
,
−
2
)
;
〈
1
5
,
2
5
〉
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
Use undetermined coefficients to find the particular solution to
y"-2y-4y=3t+6
Yp(t) =
Car A starts from rest at t = 0 and travels along a straight road with a constant acceleration of 6 ft/s^2 until it reaches a speed of 60ft/s. Afterwards it maintains the speed. Also, when t = 0, car B located 6000 ft down the road is traveling towards A at a constant speed of 80 ft/s. Determine the distance traveled by Car A when they pass each other.Write the solution using pen and draw the graph if needed.
The velocity of a particle moves along the x-axis and is given by the equation ds/dt = 40 - 3t^2 m/s. Calculate the acceleration at time t=2 s and t=4 s. Calculate also the total displacement at the given interval. Assume at t=0 s=5m.Write the solution using pen and draw the graph if needed.
Chapter 15 Solutions
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Elementary Statistics: Picturing the World (7th Edition)
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