# I need help withe equation

Anonymous

Question description

1.Differentiate.

f(x) = 3xex csc x

2.Differentiate with respect to t.

y = c cos t + t2 sin t

3.An elastic band is hung on a hook and a mass is hung on the lower end of the band. When the mass is pulled downward and then released, it vibrates vertically. The equation of motion is

s = 3 cos t + 9 sin t, t ≥ 0,

where s is measured in centimeters and t in seconds. (Take the positive direction to be downward.)

(a) Find the velocity and acceleration at time t.

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