Question

What is the meaning of second derivative?

Answer 1

Second derivative is the differentiation of the first derivative of the function. If we find derivative of y with respect to x that is dy/dx. Then the second derivative is d^2y/dx^2

Answer 2

The second derivative of a function f measures the concavity of the graph of f. A function whose second derivativeis positive will be concave up meaning that the tangent line will lie below the graph of the function