1. Higher-Order Derivatives: It sounds fancy, but it just means taking the derivative of a derivative.
First Derivative (y'): Velocity (Speed).
Second Derivative (y''): Acceleration (How fast speed is changing).
2. Maxima & Minima: This is the most "practical" use of calculus.
To find the peak or valley of any curve, you find where the slope is zero.Step: Set f'(x) = 0 and solve for x.
