Differentiating sin(x) from First Principles

Interesting Discontinuity Example

Establishing the Derivatives of sin x, cos x & tan x

Applying First Principles to x² (1 of 2: Finding the Derivative)

Find the derivative of y=sinx using the first Principle. find dy/dx w.r.t x

Calculus of Trigonometric Functions (1 of 2: Using First Principles to find d/dx of sinx)

Who cares about complex numbers??

Derivative of sec(x) from first principles (definition)

The geometric interpretation of sin x = x - x³/3! + x⁵/5! -...

Derivative of sin x and cos x

Derivative of sin(x) and cos(x), PROOF

The most important limit in Calculus // Geometric Proof & Applications

Derivative of ln(x) from the first principle

Производная csc(x) из первых принципов (определение)

Question 30 (this year's HSC Mathematics Advanced exam)

Derivative of Cos x from First Principles.

Proofs: Lim sinx/x =1 and lim [cosx -1] /x =0 as x goes to zero from geometry

Доказательство производной функции sin(x) | Введение в производные | AP Calculus AB | Khan Academy

how do we know the derivative of ln(x) is 1/x (the definition & implicit differentiation)

Почему Питер Шольце — математик, каких бывает раз в поколение?

Введение в исчисление (2 из 2: Первые принципы)