# The position of an object moving along a line is given by #p(t) = 3t - tcos(( pi )/4t) #. What is the speed of the object at #t = 7 #?

##### 1 Answer

Nov 29, 2017

#### Explanation:

You're looking for the velocity of the object. You can find the velocity

Basically, we have to find

Finding the derivative of

Now that we know