## Texas Instruments TI-89 and TI-92 Plus Computer

Last page update: Sunday, November 21, 1999

 Multivariable Implicit Derivative - for the TI-89 and TI-92 Plus Version 1.0   (Monday, September 10, 1999) Download [ di.89f  | di.9xf ] (643 bytes) Description Determines single or multivariable implicit derivative to the first or greater order. Screen shots Documentation Usage:  di(Expr,ImplicitVar,ExplicitVarOrList,Order)  Expr can be a function, expression, or equation. If Expr is not an equation, it will be assumed to be equal to zero (0).  ImplicitVar is the implicit variable.  ExplicitVarOrList is the explicit variable or a list of one or more explicit variables in an expression of three of more variables.  Return value:  The implicit derivative or a list of implicit derivatives if ExplicitVarOrList is a list of two or more variables.  Examples:  1. di(y=(2x+5)-1/2,y,x,1)  (y is an implicit function of x, first order)      -(2x+5)-3/2  2. di(y2=x2+2x,y,x,2)  (y is an implicit function of x, second order)      (-x2-2x+y2-1)/y3 3. di(x2+y2+z2=a2,z,{x,y},1)  (z is an implicit function of x and y, first order)      (-x/z, -y/z}
{"ft_lang_label":"__label__en","ft_lang_prob":0.6158718,"math_prob":0.9938502,"size":789,"snap":"2020-10-2020-16","text_gpt3_token_len":217,"char_repetition_ratio":0.13630573,"word_repetition_ratio":0.016949153,"special_character_ratio":0.28136882,"punctuation_ratio":0.17964073,"nsfw_num_words":0,"has_unicode_error":false,"math_prob_llama3":0.9877143,"pos_list":[0,1,2],"im_url_duplicate_count":[null,4,null],"WARC_HEADER":"{\"WARC-Type\":\"response\",\"WARC-Date\":\"2020-02-19T13:36:22Z\",\"WARC-Record-ID\":\"<urn:uuid:6e55dc60-f6c3-4926-ba9d-19d888f98bcf>\",\"Content-Length\":\"4392\",\"Content-Type\":\"application/http; msgtype=response\",\"WARC-Warcinfo-ID\":\"<urn:uuid:035ebf06-b50b-4b38-81cf-62dcf0d7131a>\",\"WARC-Concurrent-To\":\"<urn:uuid:18216b09-b2d5-4334-9dd1-0260e89b2116>\",\"WARC-IP-Address\":\"152.19.134.41\",\"WARC-Target-URI\":\"http://technicalc.org/fpw/di.html\",\"WARC-Payload-Digest\":\"sha1:SVV4QNE5LMZ66QOAMUJKMAU7HFLO2LHL\",\"WARC-Block-Digest\":\"sha1:QD5MUF5ZNZO7OILVKFJMHH26YAUYMEZU\",\"WARC-Identified-Payload-Type\":\"text/html\",\"warc_filename\":\"/cc_download/warc_2020/CC-MAIN-2020-10/CC-MAIN-2020-10_segments_1581875144150.61_warc_CC-MAIN-20200219122958-20200219152958-00288.warc.gz\"}"}