{"id":21918,"date":"2017-06-28T15:30:21","date_gmt":"2017-06-28T15:30:21","guid":{"rendered":"http:\/\/www.oracletutoring.ca\/blog\/?p=21918"},"modified":"2017-06-28T15:30:21","modified_gmt":"2017-06-28T15:30:21","slug":"calculator-usage-math-logs-in-variable-bases-with-the-casio-fx-991es-plus-c","status":"publish","type":"post","link":"https:\/\/www.oracletutoring.ca\/blog\/calculator-usage-math-logs-in-variable-bases-with-the-casio-fx-991es-plus-c\/","title":{"rendered":"Calculator usage, math:  logs in variable bases with the Casio fx-991ES PLUS C"},"content":{"rendered":"<h1>Tutoring math, you come to appreciate calculators.  The tutor points out an interesting feature on the Casio fx-991ES PLUS C.<\/h1>\n<p>Typically, the log key on a calculator means &#8220;base 10 log&#8221;, aka &#8220;common log.&#8221;  What about base 7 log, for instance?<\/p>\n<p>The Casio fx-991ES PLUS C has a log<sub>\u25a1<\/sub>\u25a1 key which can accept an input for the base.<\/p>\n<p><strong>Example:  On the Casio fx-991ES PLUS C, evaluate log<sub>7<\/sub>62.<\/strong><\/p>\n<p>Solution:<\/p>\n<ol>\n<li>Press the log<sub>\u25a1<\/sub>\u25a1 key, second down on the right.<\/li>\n<li>Press 7, then arrow over once, then key 62, then arrow out of the brackets.<\/li>\n<li>Press =<\/li>\n<\/ol>\n<p>Everyone not blessed with the Casio fx-991ES PLUS C can just enter log62\/log7 =<\/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, you come to appreciate calculators. The tutor points out an interesting feature on the Casio fx-991ES PLUS C. Typically, the log key on a calculator means &#8220;base 10 log&#8221;, aka &#8220;common log.&#8221; What about base 7 log, for &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"more-link\" href=\"https:\/\/www.oracletutoring.ca\/blog\/calculator-usage-math-logs-in-variable-bases-with-the-casio-fx-991es-plus-c\/\"> <span class=\"screen-reader-text\">Calculator usage, math:  logs in variable bases with the Casio fx-991ES PLUS C<\/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":[90,3],"tags":[2386],"class_list":["post-21918","post","type-post","status-publish","format-standard","hentry","category-calculator-usage","category-math","tag-casio-fx-991es-plus-c-logs-with-variable-bases"],"_links":{"self":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/21918","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=21918"}],"version-history":[{"count":5,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/21918\/revisions"}],"predecessor-version":[{"id":21923,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/21918\/revisions\/21923"}],"wp:attachment":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/media?parent=21918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/categories?post=21918"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/tags?post=21918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}