# How to find instantaneous rate of change for # y=f(t)=-16(t^2)+59t+39# when t=1?

##### 1 Answer

Dec 9, 2016

#### Explanation:

The instantaneous rate of change of

We have

#f(t)=-16t^2+59t+39#

Differentiating wrt

#f'(t)=-32t+59#

So when

#f'(1)=-32+59 = 27#

Hence, the instantaneous rate of change of