1<?xml version="1.0" encoding="UTF-8"?> 2 3<helpdocument version="1.0"> 4 5<!--*********************************************************** 6 * 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * 24 ***********************************************************--> 25 26 27 28 29<meta> 30<topic id="textscalcguidegoalseekxml" indexer="include" status="PUBLISH"> 31<title id="tit" xml-lang="en-US">Applying Goal Seek</title> 32<filename>/text/scalc/guide/goalseek.xhp</filename> 33</topic> 34</meta> 35<body> 36<bookmark xml-lang="en-US" branch="index" id="bm_id3145068"><bookmark_value>goal seeking;example</bookmark_value> 37<bookmark_value>equations in goal seek</bookmark_value> 38<bookmark_value>calculating;variables in equations</bookmark_value> 39<bookmark_value>variables;calculating equations</bookmark_value> 40<bookmark_value>examples;goal seek</bookmark_value> 41</bookmark><comment>mw changed "goal seek example" to "goal seeking;"</comment> 42<paragraph role="heading" id="hd_id3145068" xml-lang="en-US" level="1" l10n="U" oldref="22"><variable id="goalseek"><link href="text/scalc/guide/goalseek.xhp" name="Applying Goal Seek">Applying Goal Seek</link> 43</variable></paragraph> 44<paragraph role="paragraph" id="par_id3145171" xml-lang="en-US" l10n="U" oldref="2">With the help of Goal Seek you can calculate a value that, as part of a formula, leads to the result you specify for the formula. You thus define the formula with several fixed values and one variable value and the result of the formula.</paragraph> 45<paragraph role="heading" id="hd_id3153966" xml-lang="en-US" level="2" l10n="U" oldref="14">Goal Seek Example</paragraph> 46<paragraph role="paragraph" id="par_id3150871" xml-lang="en-US" l10n="U" oldref="4">To calculate annual interest (I), create a table with the values for the capital (C), number of years (n), and interest rate (i). The formula is:</paragraph> 47<paragraph role="code" id="par_id3152596" xml-lang="en-US" l10n="U" oldref="5">I = C * n* i</paragraph> 48<paragraph role="paragraph" id="par_id3155335" xml-lang="en-US" l10n="CHG" oldref="15">Let us assume that the interest rate <item type="literal">i</item> of 7.5% and the number of years <item type="literal">n</item> (1) will remain constant. However, you want to know how much the investment capital <item type="literal">C</item> would have to be modified in order to attain a particular return <item type="literal">I</item>. For this example, calculate how much capital <item type="literal">C</item> would be required if you want an annual return of $15,000.</paragraph> 49<paragraph role="paragraph" id="par_id3155960" xml-lang="en-US" l10n="CHG" oldref="6">Enter each of the values for Capital <item type="literal">C</item> (an arbitrary value like <item type="literal">$100,000</item>), number of years <item type="literal">n </item>(<item type="literal">1</item>), and interest rate <item type="literal">i</item> (<item type="literal">7.5%</item>) in one cell each. Enter the formula to calculate the interest <item type="literal">I</item> in another cell. Instead of <item type="literal">C</item>, <item type="literal">n</item>, and <item type="literal">i</item> use the <link href="text/scalc/guide/relativ_absolut_ref.xhp">reference to the cell</link> with the corresponding value.</paragraph> 50<list type="ordered"> 51<listitem> 52<paragraph role="listitem" id="par_id3147001" xml-lang="en-US" l10n="U" oldref="16">Place the cursor in the cell containing the interest <item type="literal">I</item>, and choose <emph>Tools - Goal Seek</emph>. The <emph>Goal Seek</emph> dialog appears.</paragraph> 53</listitem> 54<listitem> 55<paragraph role="listitem" id="par_id3150088" xml-lang="en-US" l10n="U" oldref="17">The correct cell is already entered in the field <emph>Formula Cell</emph>.</paragraph> 56</listitem> 57<listitem> 58<paragraph role="listitem" id="par_id3166426" xml-lang="en-US" l10n="U" oldref="18">Place the cursor in the field <emph>Variable Cell</emph>. In the sheet, click in the cell that contains the value to be changed, in this example it is the cell with the capital value <item type="literal">C</item>.</paragraph> 59</listitem> 60<listitem> 61<paragraph role="listitem" id="par_id3150369" xml-lang="en-US" l10n="U" oldref="19">Enter the expected result of the formula in the <emph>Target Value</emph> text box. In this example, the value is 15,000. Click <emph>OK</emph>.</paragraph> 62</listitem> 63<listitem> 64<paragraph role="listitem" id="par_id3146978" xml-lang="en-US" l10n="U" oldref="20">A dialog appears informing you that the Goal Seek was successful. Click <emph>Yes</emph> to enter the result in the cell with the variable value.</paragraph> 65</listitem> 66</list> 67<section id="relatedtopics"> 68<paragraph role="paragraph" id="par_id3149409" xml-lang="en-US" l10n="U" oldref="23"><link href="text/scalc/01/06040000.xhp" name="Goal Seek">Goal Seek</link></paragraph> 69</section> 70</body> 71</helpdocument> 72