Question

Differentiation of tanx/2 from first law.

Answer 1

Answer:

$sec^2x$

Step-by-step explanation:

Let $f(x)=\frac{tan x}{2}$

We know that $\frac{d(tan x)}{dx} =sec^2x$

So, $f'(x)=sec^2x/2$ ( derivative is not applicable on constants unless no    variable is present.)