Question

if x=2t^3-6t^2+7+4 at what time the velocity is 0​

Answer 1

Answer:

x=2t^3-6t^2+7+4

Dx/dt= velocity

therefore,

dx/dt=6t^2-12t

now when velocity=,0

0=6t(t-2)

0=t-2

t= 2sec.......

hope this helps u.....

Answer 2

Answer:

velocity =dx/dt

=6t^2-12t=0

6t(t-2)=0

so, t=2