Question

article varies with time t
21. The displacement x of a particle varies wit
as x = ae-ot + beßl, where a, b, a and Bare posi
constants. The velocity of the particle will
[AIPMT (Prelims)-2005]
(1) Go on decreasing with time
(2) Be independent of a and B
(3) Drop to zero when a = ß
(4) Go on increasing with time​

Answer 1

Question is no too much clear, still i will tell you the approach

to find vel differentiate once with respect to t

then for acc again differntiate and check the options.