In the next cell, define $de{l}_z$ linear $(z),$ the derivative of the linear activation function with respect to its input $($or argument$).$

Hint: $de{l}_z$linear$(z)=\frac{dz}{dz}$

To do this, replace $??$ with the derivative of linear function. $($This code really is as simple as you suspect!$)$

Tip: The answer should be a floating point number and not a function of $z.$

"Derivative of linear function with 'respect to its input"

function dlinear$($z::Number$)$

return $??$

end

Verify Solution

I. Not yet executed