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12 January, 12:12

What is the effect in the time required to solve a prob - lem when you double the size of the input from n to 2n, assuming that the number of milliseconds the algorithm uses to solve the problem with input size n is each of these function? [Express your answer in the simplest form pos - sible, either as a ratio or a difference. Your answer may be a function of n or a constant.]

A. log n

B. log log n

C. 100 n

D. n log n

E. n2

F. n3

G. 2n

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Answers (1)
  1. 12 January, 15:52
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    f (2n) - f (n) = log2

    b. lg (lg2+lgn) - lglgn

    c. f (2n) / f (n) = 2

    d. 2nlg2+nlgn

    e. f (2n) / (n) = 4

    f. f (2n) / f (n) = 8

    g. f (2n) / f (n) = 2

    Step-by-step explanation:

    What is the effect in the time required to solve a prob - lem when you double the size of the input from n to 2n, assuming that the number of milliseconds the algorithm uses to solve the problem with input size n is each of these function? [Express your answer in the simplest form pos - sible, either as a ratio or a difference. Your answer may be a function of n or a constant.]

    from a

    f (n) = logn

    f (2n) = lg (2n)

    f (2n) - f (n) = log2n-logn

    lo (2*n) = lg2+lgn-lgn

    f (2n) - f (n) = lg2+lgn-lgn

    f (2n) - f (n) = log2

    2. f (n) = lglgn

    F (2n) = lglg2n

    f (2n) - f (n) = lglg2n-lglgn

    lg2n=lg2+lgn

    lg (lg2+lgn) - lglgn

    3. f (n) = 100n

    f (2n) = 100 (2n)

    f (2n) / f (n) = 200n/100n

    f (2n) / f (n) = 2

    the time will double

    4. f (n) = nlgn

    f (2n) = 2nlg2n

    f (2n) - f (n) = 2nlg2n-nlgn

    f (2n) - f (n) = 2n (lg2+lgn) - nlgn

    2nLg2+2nlgn-nlgn

    2nlg2+nlgn

    5. we shall look for the ratio

    f (n) = n^2

    f (2n) = 2n^2

    f (2n) / (n) = 2n^2/n^2

    f (2n) / (n) = 4n^2/n^2

    f (2n) / (n) = 4

    the time will be times 4 the initial tiote tat ratio are used because it will be easier to calculate and compare

    6. n^3

    f (n) = n^3

    f (2n) = (2n) ^3

    f (2n) / f (n) = (2n) ^3/n^3

    f (2n) / f (n) = 8

    the ratio will be times 8 the initial

    7.2n

    f (n) = 2n

    f (2n) = 2 (2n)

    f (2n) / f (n) = 2 (2n) / 2n

    f (2n) / f (n) = 2
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