01 - Graphing Inequalities in Two Variables, Part 1 (Solve, Graph & Shade Inequalities)

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In this lesson, you will learn how to solve inequalities that have two variables and graph them on an x-y plane.
The first step is simply to ignore the inequality and treat it as the equation of a line. The line is drawn on the xy plane as usual, then we must determine how to shade above or below the line in order to illustrate the inequality.
We work several examples to show how to solve inequalities, graph them, and shade them on a coordinate plane.

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So in general we draw a line: y = ax+ b and then after checking if we have < or > we can mark upper or lower part of our graph, in other words under or below the 'straight curve' [ if one can say sth like that] ;-) note: b is a point where Y axis is 'touched' and a is 'showing' if our line is / or \ when a

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Topic 4
Linear programming
Programming technique
Conditions of linear programming
Assumptions
Limitations of linear programming
Problems of linear programming
Simplex method of linear programming
Simplex criteria for minimization

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Great work! I think the graph for the equation Y>-x+1 needs to be looked at again, there is a slight error drawing of the slope.

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Hello sir. I have a doubt. Why are linear inequalities graphed on xy plane in 3d while linear equations graph appear on xyz plane in 3d

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Upload complete videos lecturers on
Topic 1
Variables, continues variable, Discontinuous variable, independent variable, dependent variable, exogenous variable, endogenous variable
Topic 2
Relation and functions
Relation, function, kind of functions (increasing, decreasing, explicit and implicit, inverse) single valued and multi valued functions, the graphic representation of function, linear function, natural exponential, natural log function.

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Topic 3
Equations
Definition of equation , kinds of equation, linear equation, quadratic equation, graph of quadratic equation, simultaneous equations (elimination method, substitution method)

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