Write as c++ program that adds and multiplies two matrices

When is an original work considered public domain? a. when posted via social media b. when it is posted on the internet c. when a copyright symbol is not included with the piece of work d. when explicit permission is given by the author / owner

If an improvement creates no significant change in a product’s performance, then it is a(n) ? a0 design improvement. (there are no answer choices)

Which of the following is not an enhancement to the standard wiki to make it more attractive for corporations? encryptionwork spacespermission toolspredictive text