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2a^3=8+4a2a^3-4a-8=0
a^3-2a-4=0
It occurred to me just now by looking at the equation that a=2 would work. And it does. So that's your answer.
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∙ 11y ago
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Do you add exponents when multiplying?
Yes. Here is an example: a2a3 = a5 Another example: 2226 = 28
How do you indicate in Cell E1 a spread of 3 numbers from Cell A1 A2A3 Then need to indicate a Pass or Fail in cell F1 if the spread is greater then 40 with any of the 3 numbers indicated?
Need larger spread of the 3 numbers
What are the disadvantage of set associative mapping?
•Advantages-Almost as simple to build as adirect-mapped cache.-Only n comparators areneeded for an n-way setassociative cache. For 2-wayset-associative, only 2comparators are needed tocompare tags.-Supports temporal locality byhaving full associativity withina set.•Disadvantages -Not as good as fully-associative cache insupporting temporal locality.-For LRU schemes, because ofsmall associativity, actuallypossible to have 0% hit ratefor temporally local data.-E.g. If our accesses are A1 A2A3 A1 A2 A3, and if A1, A2and A3 map to the same2-way set, then hit rate is 0%as subsequent accessesreplace previous accesses inthe LRU scheme.
What are the disadvantages and advantages of direct mapping?
Disadvantage: if a program happens to reference words repeatedly from two different blocks that map into the same line, then the blocks will be continually swapped in the cache, and the hit ratio will be low. Thus, the performance isn't optimal compared to the other techniques. Advantage: It's easy to implement.
