Question

how are you going to assess your preparedness for earthquake hazards when an earthquake happens​

Answer 1

Answer:

Correct option is

D

Both (A) and (B)

It is given that

a=

dt

dv

=

dt

d

(2t

2

e

−t

)

=2[t

2

e

−1

(−1)+e

−1

2t]

=e

−1

(4t−2t

2

)

So, a=0

⟹ 4t−2t

2

=0

Or 2t(2−t)=0

⟹ t=0 and t=2