CoCalc Shared FilesLab 4 / lab4quiz.sagews
Author: Kyung Jin Kim
Views : 4
#1
for letter in "kyung jin kim":
print letter*10

kkkkkkkkkk yyyyyyyyyy uuuuuuuuuu nnnnnnnnnn gggggggggg jjjjjjjjjj iiiiiiiiii nnnnnnnnnn kkkkkkkkkk iiiiiiiiii mmmmmmmmmm

for n in srange(1,10+1):
print "Kyung Jin Kim"

Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim Kyung Jin Kim


#2
list2=srange(0,50+0.1,0.1)
list2


#3
f(N)= 0.2*N*(1-(N/100))
f(10)
f(10.1)
f(10.2)

1.80000000000000 1.81598000000000 1.83192000000000
10+f(10.2)

11.8319200000000


def eulers (N1,num):
f(N)= 0.2*N*(1-(N/100))
count = srange(0,num,step)
nprime=[N1]
for i in count:
b=f(nprime[i])
nprime.append(10+b)
return nprime

eulers(10,2/10, 1/10)

Error in lines 9-9 Traceback (most recent call last): File "/cocalc/lib/python2.7/site-packages/smc_sagews/sage_server.py", line 996, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in <module> TypeError: eulers() takes exactly 2 arguments (3 given)


def Euler (DE, init, stepSize, numSteps):
f(x)=DE
times= srange(0, numSteps, stepSize)
pop= [init]
for t in times:
old = pop[-1]
new= old + (f(old)*stepSize)
pop.append(new)
return pop

Euler (0.2*x*(1-(x/100)), 10, 0.1, 100.1)



#iterate previous procedure to find population value at t=100
pop = [10] #creates list with initial state as first element
count = srange

#5
def eulers (myFunction, initPop, numSteps, stepSize):
f(x)= myFunction
population=[initPop]
count = srange(0,numSteps,stepSize)
for i in count:
old = population[-1]
new = f(population[i])*stepSize + old
population.append(new)
return population

eulers (0.2*N*(1-(N/100)), 10, 100.1, 0.1)


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