For what values of $t$ is the speed of the particle increasing?
I tried to find the first derivative and I get $$6t^2-48t+90 = 0$$ $$ t^2-8t+15 = 0$$
Which is giving me $ t>5$ and $0 < t < 3$, but the book gives a different answer
For what values of $t$ is the speed of the particle increasing?
I tried to find the first derivative and I get $$6t^2-48t+90 = 0$$ $$ t^2-8t+15 = 0$$
Which is giving me $ t>5$ and $0 < t < 3$, but the book gives a different answer