{"id":7427,"date":"2014-12-30T16:40:00","date_gmt":"2014-12-30T16:40:00","guid":{"rendered":"http:\/\/www.oracletutoring.ca\/blog\/?p=7427"},"modified":"2014-12-30T16:40:00","modified_gmt":"2014-12-30T16:40:00","slug":"calculator-usage-the-sharp-el-520w-equation-solver","status":"publish","type":"post","link":"https:\/\/www.oracletutoring.ca\/blog\/calculator-usage-the-sharp-el-520w-equation-solver\/","title":{"rendered":"Calculator usage:  The Sharp EL-520W Equation Solver"},"content":{"rendered":"<h1>Tutoring math, I continue to discover new functions on calculators. \u00a0The tutor gives a brief introduction to the Sharp EL-520W equation solver.<\/h1>\n<p>&nbsp;<br \/>\nLet&#8217;s imagine you need to solve the equation<\/p>\n<p>5x<sup>2<\/sup> &#8211; x &#8211; 6 = 0<\/p>\n<p>The roots (aka answers) happen to be -1 and 1.2.  Let&#8217;s see what the solver says:<\/p>\n<p>Step 1:  Press <span style=\"font-variant:small-caps\">Mode 0<\/span><\/p>\n<p>Step 2:  Enter the equation, using <span style=\"background-color:green;color:white;font-variant:small-caps\">alpha<\/span> <span style=\"background-color:#aaaaaa;color:green;font-variant:small-caps\">rcl<\/span> to key the x.  Press = at the end, but not 0.  A value (-6, for example) might appear at the bottom of the screen; just ignore it.<\/p>\n<p>Step 3:  Press <span style=\"background-color:#aaaaaa;color:white;font-variant:small-caps\">math<\/span>, after which you&#8217;ll see the SOLV option with a blinking 0 underneath.  Press 0.<\/p>\n<p>Step 4:  The calculator will ask for a start value.  If you have no idea, you might choose 0, then press <span style=\"font-variant:small-caps\">=<\/span>.  Now it asks <em>dx?<\/em>, which (I think) means the step value it should use as it searches for the answer.  Just press <span style=\"font-variant:small-caps\">=<\/span> again to go with the step size it suggests.<\/p>\n<p>Step 5:  The screen should say <span style=\"font-family:monospace;font-style:italic\">calculating!<\/span>.  Within a few seconds, it will offer an answer.<\/p>\n<p>The equation in this example has two answers.  If you chose a start value of 0, the answer you see is likely -1.  If you return to Step 3 now, pressing <span style=\"background-color:#aaaaaa;font-variant:small-caps;color:white\">math<\/span> and so on, but selecting 1 as the start value, you&#8217;ll receive the other answer:  1.2.<\/p>\n<p>HTH:)<\/p>\n<p>Jack of <a href=\"https:\/\/www.oracletutoring.ca\">Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tutoring math, I continue to discover new functions on calculators. \u00a0The tutor gives a brief introduction to the Sharp EL-520W equation solver. &nbsp; Let&#8217;s imagine you need to solve the equation 5&#215;2 &#8211; x &#8211; 6 = 0 The roots &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"more-link\" href=\"https:\/\/www.oracletutoring.ca\/blog\/calculator-usage-the-sharp-el-520w-equation-solver\/\"> <span class=\"screen-reader-text\">Calculator usage:  The Sharp EL-520W Equation Solver<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[93,264,392],"class_list":["post-7427","post","type-post","status-publish","format-standard","hentry","category-math","tag-calculator-usage-2","tag-sharp-el-520w","tag-sharp-el-520w-equation-solver"],"_links":{"self":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/7427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/comments?post=7427"}],"version-history":[{"count":27,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/7427\/revisions"}],"predecessor-version":[{"id":7454,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/7427\/revisions\/7454"}],"wp:attachment":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/media?parent=7427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/categories?post=7427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/tags?post=7427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}