For each of the following vector fields f, decide whether it is conservative or not by computing the appropriate first order partial derivatives. type in a potential function f (that is, nabla f = f) with f(0,0) = 0. if it is not conservative, type n.

a f (x, y) = (6x - 2y)i + (-2x + 8y)j f (x, y) =
b. f (x, y) = 3yi + 4xj f (x, y) =
c. f (x, y) -= (3siny)i + (-4y + 3x cosy)j f(x, y) =
note: your answers should be either expressions of x and y (e. g. 3xy + 2y). or the letter n

Explain how you can use the associative property to evaluate (7x50)x4.

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left

Agroup of randomly selected apple valley high school students were asked to pick their favorite gym class. the table below shows the results of the survey. there are 528 students at apple valley high school. gym class number of students racquet sports 1 team sports 9 track and field 17 bowling 13 based on the data, what is the most reasonable estimate for the number of students at apple valley high school whose favorite gym class is bowling? choose 1 answer a. 9 b. 13 c. 119 d. 172