An integral is the area under a function’s curve. Take a look at this image: The area of the darker colored section is called the integral of f(x) in the…

## Limits Of Functions

a limit is the value that a function approaches some value. In formulas, a limit is usually written as and is read as “the limit of f of x as x approaches a equals L”. Rules for Limits:…

## Secant and Tangent Lines

A secant line is a straight line joining two points on a function. It is also equivalent to the average rate of change, or simply the slope between two points. A tangent line is a straight line…

## Derivative: definition and rules

The derivative of a function of a real variable measures the sensitivity to change of the function value (output value) with respect to a change in its argument (input value)….

## Trigonometric formula

Trigonometry is a branch of mathematics that studies relationships involving lengths and angles of triangles (Wikipedia). There are six main trigonometric functions: Sine (sin) Cosine (cos) Tangent (tan) Secant (sec) Cosecant (csc) Cotangent (cot) Trigonometric formula…

## Logarithm formula

The Logarithm is the inverse function to exponentiation. That means the logarithm of a given number x is the exponent to which another fixed number, the base b, must be…