{"id":6460,"date":"2014-11-20T22:48:47","date_gmt":"2014-11-20T22:48:47","guid":{"rendered":"http:\/\/www.oracletutoring.ca\/blog\/?p=6460"},"modified":"2018-01-27T21:06:21","modified_gmt":"2018-01-27T21:06:21","slug":"calculus-finding-the-derivative-with-the-casio-fx-991es","status":"publish","type":"post","link":"https:\/\/www.oracletutoring.ca\/blog\/calculus-finding-the-derivative-with-the-casio-fx-991es\/","title":{"rendered":"Calculus: Finding the derivative with the CASIO fx-991ES"},"content":{"rendered":"

With exams looming, people might come to tutoring with questions about their calculators: \u00a0What does it do (besides the obvious)? \u00a0How can it really help me? The tutor offers a handy hint about the CASIO fx-991ES.<\/h1>\n

Some exams don’t allow the use of just any calculator. \u00a0Make sure, as a student, you know which one(s) you can use. \u00a0If you need to buy a different one for the exam, pick it up as soon as you can: \u00a0familiarity with your calculator is key.<\/p>\n

For those allowed to use the CASIO fx-991ES,<\/em> its derivative function might be useful. As far as I can see (and would expect anyway), it doesn’t seem to do symbolic derivatives, but will find the value of the derivative at a specific x<\/em><\/strong> value.<\/p>\n

Example:<\/strong><\/p>\n

Find the value of <\/p>\n

d\/dx (x^0.5-1)\/(sinx +2), x=5<\/p>\n

Even those who can confidently evaluate this derivative are likely not excited about doing it.<\/p>\n

Well, here’s how to have the CASIO fx-991ES<\/em> do it for you:<\/p>\n

    \n
  1. I was in MATH mode when I did this. (That’s shift setup 1<\/span>).<\/li>\n

    \t<\/p>\n

  2. Press shift<\/span>∫. Enter the derivative expression: (√x-1)\/(sin(x)+2) (Note: it autobrackets with<\/em> sin.) Use the arrows at left and right of the replay<\/span> to move around as needed;eg, to get out of the radical sign.<\/li>\n

    \t<\/p>\n

  3. After your expression is entered, arrow over to x= and enter your desired value at which to evaluate the derivative. (x=5, in this case).<\/li>\n

    \t<\/p>\n

  4. Press =. The screen may go blank for a few seconds while the calculator computes the answer. Then, you should be greeted with a restatement of the expression and the answer across the bottom: -0.1087192572, in this case.<\/li>\n<\/ol>\n

    I don’t have to explain to calculus students how convenient this function can be:)<\/p>\n

    Jack of Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.<\/p>\n","protected":false},"excerpt":{"rendered":"

    With exams looming, people might come to tutoring with questions about their calculators: \u00a0What does it do (besides the obvious)? \u00a0How can it really help me? The tutor offers a handy hint about the CASIO fx-991ES. Some exams don’t allow …<\/p>\n

    Calculus: Finding the derivative with the CASIO fx-991ES<\/span> Read More »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[234],"tags":[295,296],"class_list":["post-6460","post","type-post","status-publish","format-standard","hentry","category-calculus","tag-casio-fx-991es","tag-derivative-on-calculator"],"_links":{"self":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/6460","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=6460"}],"version-history":[{"count":32,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/6460\/revisions"}],"predecessor-version":[{"id":28815,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/6460\/revisions\/28815"}],"wp:attachment":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/media?parent=6460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/categories?post=6460"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/tags?post=6460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}