Differentiate each of the following w.r.t. x:
cot2x
Formulae :
• 
• 
Let,
y = cot2 x
and u = cot x
therefore, y= u2
Differentiating above equation w.r.t. x,
………… By chain rule
…………. 
= 2 cot x .(- cosec2 x)
= - 2cot x . cosec2 x
1
Differentiate each of the following w.r.t. x:
cot2x
Formulae :
•
•
Let,
y = cot2 x
and u = cot x
therefore, y= u2
Differentiating above equation w.r.t. x,
………… By chain rule
………….
= 2 cot x .(- cosec2 x)
= - 2cot x . cosec2 x