Interpolation calculator casio fx991es

Table of Contents

Introduction

Linear interpolation is a mathematical method of using the equation of a line in order to find a new data point, based on an existing set of data points.

Interpolation calculator casio fx991cw

Linear extrapolation is the same as linear interpolation, with the exception of the new data points, which are outside the range of the given (known) data points.

With other words, with linear interpolation and extrapolation, we can find new data points by approximating the current (known) data points as lines.

To apply linear interpolation or extrapolation, we need to know the coordinates of two points.

These points will define the equation of a line, which will be used to find any new set of data points along the line.

For example, we know the coordinates of the points A (x₁, y₁) and B (x₂, y₂).

What y will be for any given x ?

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Formula

To find the value of y, for a given, x₁, y₁, x₂, y₂ and x, we need to apply the l