What can second derivative d2y/dx2 represent?

A. slope के change की rate / Rate of change of slope

Step 1: Identify the concept: this is second derivative. Step 2: First derivative tells slope and second derivative tells change of slope. Step 3: Remember second derivative with curvature or slope change.

Step 1: concept पहचानें: यह second derivative है। Step 2: First derivative slope बताता है और second derivative slope के change को बताता है। Step 3: Second derivative को curvature या slope change से याद रखें।