**Note:- If y = x^n ; where n = constant ; then dy/dx = n*x^(n-1)**

Now,

`g(t) = -8t^3 -5t + 12`

`g'(t) = -8*3*t^2 - 5 + 0`

`or, g'(t) = -24t^2 - 5`

`Thus, g''(t) = -24*2*t^1 - 0`

`or, g''(t) = -48t`

``

**Note:- If y = x^n ; where n = constant ; then dy/dx = n*x^(n-1)**

Now,

`g(t) = -8t^3 -5t + 12`

`g'(t) = -8*3*t^2 - 5 + 0`

`or, g'(t) = -24t^2 - 5`

`Thus, g''(t) = -24*2*t^1 - 0`

`or, g''(t) = -48t`

``