Find the derivative of y with respect to the independent variable.y = (cos ?)
A. -
cos ? sin ?
B. 
(cos ?)
-1
C. -(cos ?)
-1 sin ?
D. -
(cos ?)
-1 sin ?
Answer: D
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Solve the problem.A committee is to be formed. Possible candidates for the committee are Eric, Frances, Greg, and Jose. Denoting these four people by e, f, g, j, list all possible committees if the committee is to contain at least two people and may contain up to four people.
A. {e, f}, {e, g}, {e, j}, {f, j}, {e, f, g}, {e, f, j}, {e, g, j}, {f, g, j}, {e, f, g, j} B. {e, f}, {e, g}, {e, j}, {f, g}, {f, j}, {g, j}, {e, f, g}, {e, f, j}, {f, g, j}, {e, f, g, j} C. {e, f}, {e, g}, {e, j}, {f, g}, {f, j}, {g, j}, {e, f, g}, {e, f, j}, {e, g, j}, {f, g, j}, {e, f, g, j} D. {e, f}, {e, g}, {e, j}, {f, g}, {f, j}, {g, j}, {e, f, g}, {e, f, j}, {e, g, j}, {f, g, j}
Solve the problem.Suppose that a household appliance draws a current represented by the relation src="https://sciemce.com/media/4/ppg__rrrr0629191332__f1q189g5.jpg" alt="" style="vertical-align: -4.0px;" /> where a, k, and d are constants.
where t is time measured in seconds. The power consumed by the appliance is 
where R is a constant. Take R to be 12 and graph the power in 
by 
and use an identity to write the expression for the power in the form
A. P = 150 cos(240?t) + 150
[0, 0.04, 0.01] by [-200, 2000, 200]
B. P = 300 cos(240?t) + 300
[0, 0.04, 0.01] by [-200, 2000, 200]
C. P = 150 cos(120?t) + 150
[0, 0.04, 0.01] by [-200, 2000, 200]
D. P = -150 cos(240?t) + 150
[0, 0.04, 0.01] by [-200, 2000, 200]
Find the vertices and the foci of the given ellipse.
+ 
= 1
A. V: (0, -20), (0, 20); F: (0, -12), (0, 12) B. V: (-20, 0), (20, 0); F: (0, -16), (0, 16) C. V: (-20, 0), (20, 0); F: (-12, 0), (12, 0) D. V: (0, -20), (0, 20); F: (-16, 0), (16, 0)
Determine whether the vectors 
and 
are equivalent.A(5, 8), B(7, 15), C(0, 0), and D(2, 6)
A. Equivalent B. Not equivalent