If tan A + cot A = 4, find the value of tan^2A + cot^2A

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If tan A + cot A = 4, find the value of tan^2A + cot^2A

A14

B20

C35

D40

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If a relation is in BCNF, then it is also in

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If a relation is in BCNF, then it is also in

A1 NF

B2 NF

C3 NF

D4 NF

Akilesh Kharvi ? Dec 8 '2016 at 22:17

Answer:3 NF

Explanation:

Normalization is a process that “improves” a database design by generating relations that are of higher normal forms.

there are four normal form
->1 NF
->2 NF
->3 NF
->BCNF

 

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the-production-line-of-chip

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The production line of a chip manufacturing unit wants to simulate the probability of a chip being manufactured defective. Common sense says that the probability of a chip being defective does not depend on whether or not the previous chip was defective. Hence. the probability distribution. appropriate for the situation. is l

Auniform

Bnormal

Cbinomial

Dtriangular

Akilesh Kharvi ? Dec 8 '2016 at 22:15

Answer: binomial

Explanation:

probability of a chip being defective does not depend on whether or not the previous chip was defective.

the individual trials are independent of each other so it is binomial distribution

For the Binomial model to be
applied the following four criteria must be satisfied
• the trial is carried out a fixed number of times n.
• the outcomes of each trial can be classified into two ‘types’ conveniently named ‘success’ or ‘failure’.
• the probability p of success remains constant for each trial.
• the individual trials are independent of each other.

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The data structure useful for the breadth first search of a

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The data structure useful for the breadth first search of a graph is

Astack

Bqueue

Clinked list

Ddequeue

Akilesh Kharvi ? Dec 8 '2016 at 22:11

Answer: queue

Explanation:

BFS starts visiting vertices of a graph at an arbitrary vertex by marking it as
visited.
• It visits graph’s vertices by across to all the neighbors of the last visited vertex
• Instead of a stack, BFS uses a queue

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Merge sort uses

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Merge sort uses

Agreedy methodology

Bdivide and conquer methodology

Cdynamic methodology

Dheuristics with back tracking.

Akilesh Kharvi ? Dec 8 '2016 at 22:9

Answer: divide and conquer methodology

Explanation:

In computer science, merge sort (also commonly spelled mergesort) is an O(n log n) comparison-based sorting algorithm. Most implementations produce a stable sort, which means that the implementation preserves the input order of equal elements in the sorted output. Mergesort is a divide and conquer algorithm that was invented by John von Neumann in 1945.

Reference: https://en.wikipedia.org/wiki/Merge_sort

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