{a(b+c)+a’b}’
使用demorgans定理我得到a'+ b'c'a + b'然后我b'从b'c'a + b'中考虑b'(1+c'a)得到b'，后者变成a'+b'。将它重新插入等式/* Send Spreadsheet in an email as PDF, automatically */
function emailSpreadsheetAsPDF() {
// Send the PDF of the spreadsheet to this email address
var email = "amit@labnol.org";
// Subject of email message
// The date time string can be formatted in your timezone using Utilities.formatDate method
var subject = "PDF Reports - " + (new Date()).toString();
// Get the currently active spreadsheet URL (link)
// Or use SpreadsheetApp.openByUrl("<<SPREADSHEET URL>>");
var ss = SpreadsheetApp.getActiveSpreadsheet();
// Email Body can be HTML too with your logo image - see ctrlq.org/html-mail
var body = "PDF generated using code at ctrlq.org from sheet " + ss.getName();
var url = ss.getUrl();
url = url.replace(/edit$/,'');
/* Specify PDF export parameters
// From: https://code.google.com/p/google-apps-script-issues/issues/detail?id=3579
exportFormat = pdf / csv / xls / xlsx
gridlines = true / false
printtitle = true (1) / false (0)
size = legal / letter/ A4
fzr (repeat frozen rows) = true / false
portrait = true (1) / false (0)
fitw (fit to page width) = true (1) / false (0)
add gid if to export a particular sheet - 0, 1, 2,..
*/
var url_ext = 'export?exportFormat=pdf&format=pdf' // export as pdf
+ '&size=letter' // paper size
+ '&portrait=false' // orientation, false for landscape
+ '&fitw=true&source=labnol' // fit to width, false for actual size
+ '&sheetnames=false&printtitle=false' // hide optional headers and footers
+ '&pagenumbers=false&gridlines=false' // hide page numbers and gridlines
+ '&fzr=false' // do not repeat row headers (frozen rows) on each page
+ '&gid='; // the sheet's Id
var token = ScriptApp.getOAuthToken();
var sheets = ss.getSheets();
//make an empty array to hold your fetched blobs
var blobs = [];
for (var i=0; i<sheets.length; i++) {
// Convert individual worksheets to PDF
var response = UrlFetchApp.fetch(url + url_ext + sheets[i].getSheetId(), {
headers: {
'Authorization': 'Bearer ' + token
}
});
//convert the response to a blob and store in our array
blobs[i] = response.getBlob().setName(sheets[i].getName() + '.pdf');
}
//create new blob that is a zip file containing our blob array
var zipBlob = Utilities.zip(blobs).setName(ss.getName() + '.zip');
//optional: save the file to the root folder of Google Drive
DriveApp.createFile(zipBlob);
// Define the scope
Logger.log("Storage Space used: " + DriveApp.getStorageUsed());
// If allowed to send emails, send the email with the PDF attachment
if (MailApp.getRemainingDailyQuota() > 0)
GmailApp.sendEmail(email, subject, body, {attachments:[zipBlob]});
}
。这是正确的还是我错了？
答案 0 :(得分：0)
{a(b+c)+(a'b)}' = (a (b+c))' . (a'b)'
= (a' + (b+c)') . (a+b')
= (a' + (b'.c')) . (a+b')
= (a.a') + (a'b') + (ab'c') + (b'c')
= 0 + a'b' + b'c'(a+1)
= a'b' + b'c'(1)
= a'b' + b'c'
= b'(a'+c')