Transcription of Solving inequalities - mathcentre.ac.uk
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Solving inequalities - mathcentre.ac.uk
Solving inequalitiesmc-TY- inequalities -2009-1 inequalities are mathematical expressions involving the symbols>,<, and . To solve aninequality means to find a range, or ranges, of values that an unknownxcan take and still satisfythe this unit inequalities are solved by using algebra and by using order to master the techniques explained here it is vital that you undertake plenty of practiceexercises so that they become second reading this text, and/or viewing the video tutorial on this topic, you should be able to: solve simple inequalities using algebra solve simple inequalities by drawing graphs solve inequalities in which there is a modulus symbol solve quadratic of some simple used with a modulus graphs to solve mathcentre 20091. IntroductionThe expression5x 4>2x+ 3looks like an equation but with the equals sign replaced by anarrowhead.
4. Inequalities used with a modulus symbol Inequalities often appear in conjunction with the modulus, or absolute value symbol | |, for example, in a statement such as |x| < 2 Recall that the modulus of a number is simply its magnitude, or absolute value, regardless of its sign. So |2| = …
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