Derivative of a Parametic Function

How to find the derivative of a parametric function: 1 example and its solution.

Examplex = t3 - 2t, y = t2 + 1, dy/dx = ?

A parametric function is a function
that a parameter (t) connects the variables (x, y).

In this example,
x and y are not directly connected by a formula: like y = f(x).
But the parameter t connects both x and y.

Let's see how to find dy/dx
at t = 1.

Solution (Detail)