{"id":1314,"date":"2008-08-27T10:19:37","date_gmt":"2008-08-27T02:19:37","guid":{"rendered":"http:\/\/www.intmath.com\/blog\/?p=1314"},"modified":"2021-08-17T12:51:16","modified_gmt":"2021-08-17T04:51:16","slug":"google-calculator-handy-but-not-always-correct","status":"publish","type":"post","link":"https:\/\/www.intmath.com\/blog\/mathematics\/google-calculator-handy-but-not-always-correct-1314","title":{"rendered":"Google calculator - handy, but not always correct"},"content":{"rendered":"<p>Have you ever played with Google's nifty calculator?<\/p>\n<p>Just go to Google and type something like the following into the search field:<\/p>\n<blockquote>\n<p>4 + 5<\/p>\n<\/blockquote>\n<p>The answer will come back at the top of the search results.<\/p>\n<p>What else can it do? Well, lots, actually.<\/p>\n<p>Try these:<\/p>\n<ul>\n<li><strong>Raise to a power<\/strong> - Example: 5^2<\/li>\n<li><strong>Square root<\/strong> - Example: sqrt(34.7)<\/li>\n<li><strong>Trigonometric functions<\/strong> - Example: sin(3pi\/4) [It assumes the angle is in radians]<\/li>\n<li><strong>Counting<\/strong> (in the study of probability) - Example: If you need to know the number of ways 5 objects can be chosen from 14 objects, put: 14 choose 5<\/li>\n<\/ul>\n<p>There are more examples and information here: <a href=\"https:\/\/www.google.com\/insidesearch\/tipstricks\/index.html\">Calculator<\/a>.<\/p>\n<p>BTW, you may not need to actually go to the site. If you have Google selected as the search in Firefox, the answer will appear as a \"suggestion\" and you don't even need to leave your current page:<\/p>\n<p><img loading=\"lazy\" title=\"google-calculator\" src=\"\/blog\/wp-content\/images\/2008\/08\/google-calculator.gif\" alt=\"Google calculator in Firefox \" width=\"210\" height=\"47\" \/><\/p>\n<h2>Large Numbers and Calculators<\/h2>\n<p>Most hand-held calculators are limited when it comes to large numbers. This is a problem if you want to find the factorial of some large-ish number. For example, an old 8-digit calculator I have here can go up to 69! only (the answer is 1.71122 \u00d7 10<sup>98<\/sup>). [This answer is almost equal to the number \"googol\" (10<sup>100<\/sup>), which was the number that inspired the companies name.]<\/p>\n<p>Now, I can do up to 170! (The answer is 7.25741562 \u00d7 10<sup>306<\/sup>). After that, it falls over. But hey, not bad.<\/p>\n<h2>Calculator Mistakes<\/h2>\n<p>Now, what about those mistakes I was talking about? The following article from CNET.com writer Steven Shankland shows that when the numbers are huge, the calculator could be off a bit (or a lot).<\/p>\n<p>See <a href=\"https:\/\/www.cnet.com\/news\/googles-calculator-muffs-some-math-problems\/\">Google's calculator muffs some math problems<\/a><\/p>\n<p>I tend to agree with Shankland. They should put effort into getting this right, with the amount of resources at their disposal you'd think they could...<\/p>\n<p>&nbsp;<\/p>\n<p><strong>UPDATE (Dec 2018):<\/strong> Google's phone calculator app appears to have solved most of the issues mentioned by Shankland's (old now) article.<\/p>\n<p class=\"alt\">See the <a href=\"https:\/\/www.intmath.com\/blog\/mathematics\/google-calculator-handy-but-not-always-correct-1314#comments\" id=\"comms\">6 Comments<\/a> below.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Google's handy calculator doesn't always get it right, even with simple subtraction.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":""},"categories":[4],"tags":[127],"_links":{"self":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/posts\/1314"}],"collection":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/comments?post=1314"}],"version-history":[{"count":11,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/posts\/1314\/revisions"}],"predecessor-version":[{"id":12844,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/posts\/1314\/revisions\/12844"}],"wp:attachment":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/media?parent=1314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/categories?post=1314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/tags?post=1314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}