i need help fast with these problems

Jul 21st, 2015
Price: $5 USD

Question description

1.The motion of a spring that is subject to a frictional force or a damping force (such as a shock absorber in a car) is often modeled by the product of an exponential function and a sine or cosine function. Suppose the equation of motion of a point on such a spring is

s(t) = 4e−1.9t sin 2πt

where s is measured in centimeters and t in seconds. Find the velocity after t seconds.

2.Find the x-coordinates of all points on the curve 

f(x) = sin 2x − 2 sin x

 at which the tangent line is horizontal. (Enter your answers as a comma-separated list. Use n to represent any integer.)

3.ind an equation of the tangent line to the curve at the given point.

y = sin 9x + sin2 9x,(0, 0)

Tutor Answer

(Top Tutor) Daniel C.
School: Cornell University

Studypool has helped 1,244,100 students

Review from our student for this Answer

Jul 22nd, 2015
"Thanks, good work"
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1821 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors