If v (t) = -16t+20, find v (1/2a+1)

Possible derivation:

d/da (4 - 8 a)

Differentiate the sum term by term and factor out constants:

= d/da (4) - 8 (d/da (a))

The derivative of 4 is zero:

= - 8 (d/da (a)) + 0

Simplify the expression:

= - 8 (d/da (a))

The derivative of a is 1:

= - 8 1

Simplify the expression:

Answer: = - 8