Evaluate the expression.
2
A. 
B. - 
C. 
D. - 
Answer: A
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Parametric equations and and a parameter interval for the motion of a particle in the xy-plane are given. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion.x = 5 sin t, y = 4 cos t, 0 ? t ? 2?
A. 
+ 
= 1
Counterclockwise from (5, 0) to (5, 0), one rotation
B. 
+ 
= 1
Counterclockwise from (0, 4) to (0, 4), one rotation
C. 
+ 
= 1
Counterclockwise from (0, 5) to (0, 5), one rotation
D. 
+ 
= 1
Counterclockwise from (4, 0) to (4, 0), one rotation
Use the quotient rule and the product rule to simplify each radical.
A. 
B. 
C. 
D. 
Find the value of the constant ?k so that the function is a probability density function in the indicated interval.
?
What will be an ideal response?
Identify the conic as a circle, parabola, ellipse, or hyperbola.
?
??
A. parabola B. circle C. hyperbola D. ellipse E. none of the above