Question

Simplify using appropriate properties:
-5 2 3 2 1
x=+---x-
6 7.4 76​

Answer 1

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answer is 0

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Answer 2

b...r...a..i...n..l...i...s..t

Step-by-step explanation:

write data at times optimized for disk rotation. Unless synchronous writes are required, a process writing to disk simply writes into the cache, and the system asynchronously writes the data to disk when convenient. The user process sees very fast writes. When data are read from a disk file, the block I/O system does some read-ahead; however, writes are much more nearly asynchronous than are reads. Thus, output to the disk through the file system is often faster than is input for large transfers, counter to intuition.

12.7 Recovery