When is chain rule used?

A. composite function का derivative निकालने में / To differentiate composite function

Step 1: Identify the concept: this is derivative rule. Step 2: When a function is inside another function chain rule is used. Step 3: Remember function inside function means chain rule.

Step 1: concept पहचानें: यह derivative rule है। Step 2: जब function के अंदर दूसरा function हो तो chain rule use होती है। Step 3: Function inside function means chain rule याद रखें।