Homework Help Forum: Graphing on Calculator

Posted by John on Sunday, September 13, 2009 at 8:05pm.

An appliance manufacturer estimates that the profit y (in dolars) generated by producing x cooktops per month is given by the equation y= 10x + 0.5x^2 - 0.001x^3 - 5000 where 0 ¡Ü x ¡Ü 450. Graph the equation. I punched in the equation and I didn't get anything. I dont know what I should do with 0 ¡Ü x ¡Ü 450

• Graphing on Calculator - MathMate, Sunday, September 13, 2009 at 8:22pm

  First, the inequality converted to Western encoding is: where 0 ≤ x ≤ 450. Then you need to understand that not all calculators have the same features. So it would help if you identify the make and model of your graphics calculators if you are looking into the operation of the calculator. In general, graphing software allow the limits of the independent variable to graph, which is precisely the "0 ≤ x ≤ 450" requirement.

  
  

• Graphing on Calculator - John, Sunday, September 13, 2009 at 8:53pm

  oops the 0 <or= x <or= 450 I dont know how to make the less than equal sign on my keyboard.

  
  

• Graphing on Calculator - John, Sunday, September 13, 2009 at 8:54pm

  my calculator is TI - 83 Plus

  
  

• Graphing on Calculator - MathMate, Sunday, September 13, 2009 at 8:58pm

  Unfortunately I don't have a TI-83plus. I hope someone who has one will be able to help you. To type ≤ or ≥ you would type "& l e ;" and "& g e ;" respectively, without the double quotes and without the intevening spaces. Try it on your next post. Don't forget to change the encoding back to Western-8859-1 before you do so. You probably have a default with another coding.

  
  

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