4. Using Laplace transform and showing the details of your work, solve the initial value problem. y1'=-2y1+3y2, y2=4y1-y2, y1(0)=4, y2(0)=3,

3. A computer whose proces esses have 2048 pages in their acldress spaces keeps its page tables in memory. The overhead required for reuding a w word from the pige table is 600 nsec. To reduce this overhead, the computer has a TLB, which holds 64 (page. frame) pairs and can do a lookup in 100 nsee. What hil rate is needed to reduce the mean overhead to 200 nsee or less

4. Using Laplace transform and showing the details of your work, solve the initial value problem. y₁'=-2y₁+3y₂, y₂=4y₁-y₂, y₁(0)=4, y₂(0)=3,

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