The particle moves upward if is and that happens for ...
A particle moves along the y-axis, so that its velocity at any time t >= 0 is given by v(t) = tcos(t^2). At time t = 0, the position of the particle is y = 3.
Find the values of t, 0 <= t <= 2 in which the particle moves upward.
Can somebody show me how to do this?