Question

cat face derivata din tg (x/2)? va rog explicati

Answer 1

Salut,

$\left(tg\left(\dfrac{x}2\right)\right )'=\dfrac{1}{cos^2\left(\dfrac{x}2\right)}\cdot\left(\dfrac{x}2\right)'=\dfrac{1}{cos^2\left(\dfrac{x}2\right)}\cdot\dfrac{1}2=\dfrac{1}{2\cdot cos^2\left(\dfrac{x}2\right)}.$

Ai înțeles rezolvarea ?

Green eyes.