The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 8 sin t - cos tFind the body's velocity at time t = ?/4 sec.
A. - 
m/sec
B. 
m/sec
C. - 
m/sec
D. 
m/sec
Answer: B
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, 2, e5) for ln(xz)y + 3y3 = 0.
A. 
B. - 
C. 
D. - 
Mathematics
Find the length of the curve.x = 7 sin t - 7t cos t, y = 7cos t + 7t sin t, 0 ? t ? 
A. 
?2
B. 
?2
C. 
?
D. 
?2
Mathematics
Find the limit 
, if it exists.
What will be an ideal response?
Mathematics
Find the domain of the function.y = 
A. (-?, ?)
B. [-7, ?)
C. [0, ?)
D. (-?, 
Mathematics