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LIFESCI 30B Midterm: Midterm Review

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whiteraccoon303
29 Nov 2015
School
UCLA
Department
Life Sciences
Course
LIFESCI 30B
Professor
Conley William Joseph

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Document Summary

Assume the following: each day, 4% of susceptible individuals get infected, on average, a person remains infected for 6 days, so each day roughly 17% of infected individuals recover. Most (say 16%) will have developed immunity to the disease, but a few (1%) will not be immune, and thus will immediately be susceptible again: a person"s immunity does not last forever. Each day 2% of recovered individuals become susceptible again. Draw a compartment diagram for this model, and label each of the arrows appropri- ately. Then translate your diagram into a system of equations (for st+1, it+1, and rt+1 in terms of st, it, and rt). 2. (a) solve for a and b in the equation a 2. Note: to do this, you will probably want to rewrite this as a system of equations and solve simultaneously . (b) explain what your answer to part (a) means about the coordinates of 9.

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Related Questions

Submit the vector [33 44 55 77 95 99 22 25 41 66 88 89] to the Quicksort Partition algorithm. What is the final state of the vector? 
What index does the algorithm return?
 
Partition (A, p, r)   ▷ p ≤ r
1  x := A[r]   ▷ pivot
2  i := p − 1
3  for j := p to r − 1
4          if  A[ j] ≤ x
5                 i := i + 1
6                change A[i] with A[ j]
7  changeA[i+1] with A[r]
8  return i + 1

18. What kind of exception would be caught below? public class Test public static void main(String[] args) try String[] s = new String[3]; S[1] = "Hello"; s [2] = "World"; for (int i = 0; i <= s.length - 1; i++) System.out.print (s[i].length()); catch (Exception e) System.out.println(e); (A) NullPointerException (B) ArrayIndexOutOfBoundsException (C) Input MismatchException (D) NumberFormatException (E) No exception would be caught.

COMP 2021Winter 2010 - Final Examination Pape 11 110 6 . The two classes low compile without me. What is displayed when the main() method of class Nightmareix is executed? Clearly indicate the program output in the appropriate space ca pe You may use the other lank space as a scratch pad to track the state of memesy as the program escoles, but the contents of this other space will not he graded The definition of the Pair claw public cla Pair private int left: private int right publie Pairintit T left- right - public void nix (Pair pl loft - P.left public string toitring) return "IL... lort R right "1" The definition of the NightmareMix class public class Nightmareix public static void mix Inta (int il, int 12) public static void mixArraywithint fint 11 a, int i, int v) 11 - V public static void mixArrayaor Int(int il al, intl a2) public static void mixMatrixWithint fint 11111121 - m int 11, int 12, int v public static void mixMatrix WithArray (int 11 11- , int i, intila) public static void mixlar Addresses Pair pl, Pair 2) pl - p2 public static void mixArrayWithPairState (Pair) a, int i, Pair pl public static void mixArrayWithPairAddress (Pairla, int i, Pair p) ali - P; public static void mixArrayaoraira (Pairil al, Pairil a2) public static void main(Stringil arga) int myV1 - 1; int myV2 - 2; int my = (3, 4) int my2 = 5, 6) into myM1 , 8 9, 10}} Pair myP1 = new Pair (11, 12) Pair myP2 = new Pair (13, 14) Pair myPA (neu Pair (15, 16), new pair(17, 18) Pair myPA2 = (neu Pair (19, 20), new pair (21, 22) mixInita (myvi, myV2); mixArrayWith Int (myal, 0, myv2); mixArraysOfIntinyal, myA2); MixMatrixWithint (myM, 0, 0, myV2); mixArrayaofTnt (HyMIO, myM[1); mixMatrixWithArray (wy, , WyA2); mixArraywithint nyA2, 0, myV2); mixPair Addresses (wypi, myP2); RixPairAddren (HyPALIO), WPAI[1]); mixArraywithPairstate (myPA2, 0, 1); mixArraywithPairAddresa (myPA2, 1, WP2); mixArray Paira (wyPal, myPAZ) System.out.println("1.. myvi) System.out.println("2: ( +WA110 A11] + " ") System.out.println("3: ( + myA2[0] + + m 2 (1) + " ); System.out.println("4: ( myM[0][0] + "," myM[0][1] + " myM[1][0] + " " + myM[1][1] + "} ") System.out.println('5: ( + myPA10) + myPA [1] + " "); System.out.println("6: ( myPA2[0 PA21] + " ); 1"