Question

derivative:
d/dx (3 cos (pi t +2)) =?

Answer 1

I need help just find the derivative using product rule

Answer 2

i could be wrong

Answer 3

not product rule but chain rule
\[\frac{d}{dt} 3 \cos(\pi t +2) = -3 \sin(\pi t +2) * \frac{d}{dt}(\pi t +2)\]

Answer 4

-3sin(pit+2)2

Answer 5

?

Answer 6

no
\[d/dt (\pi t +2) = \pi\]

Answer 7

its not one of the answer choices

Answer 8

.

Answer 9

???

Answer 10

well first you didn't type it correctly and they want acceleration which is 2nd derivative
\[x(t) = 3\cos(\pi t) +2\]
\[v(t) = -3 \pi \sin(\pi t)\]
\[a(t) = -3 \pi^{2} \cos(\pi t)\]

Answer 11

thnxs can u help me with another one

Answer 12

problem 5

Answer 13

acceleration is slope of velocity graph.....find where slope is 0 (the max/min points)

Answer 14

cant tell by the graph?

Answer 15

?? just look at turning points