hw02.pdf - hw02 April 26, 2020 [1]: # Initialize OK from...

hw02
April 26, 2020
[1]: # Initialize OK
from client.api.notebook import Notebook
ok = Notebook( 'hw02.ok' )
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Assignment: Homework 2: Arrays and Tables
OK, version v1.12.5
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1 Homework 2: Arrays and Tables
[2]: # Don't change this cell; just run it.
# When you log-in please hit return (not shift + return) after typing in your ␣
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email
import numpy as np
from datascience import *
_ = ok . auth(inline = True )
Successfully logged in as [email protected]
Recommended Reading : * Data Types * Sequences * Tables
Please complete this notebook by filling in the cells provided. Before you begin, execute the
following cell to load the provided tests. Each time you start your server, you will need to execute
this cell again to load the tests.
This assignment is due Thursday, February 6 at 11:59 P.M. You will receive an early submission
bonus point if you turn in your final submission by Wednesday, February 5 at 11:59 P.M. Late work
will not be accepted as per the policies of this course.
Start early so that you can come to office hours if you’re stuck. Check the website for the office
hours schedule .
Throughout this homework and all future ones, please be sure to not re-assign variables throughout
the notebook! For example, if you use max_temperature in your answer to one question, do not
reassign it later on.
1

Important : In this homework, the ok tests will tell you whether your answer is correct, except for
Parts 4, 5 & 6. In future homework assignments, correctness tests will typically not be provided.
Before continuing the assignment, select ”Save and Checkpoint” in the File menu and then execute
the submit cell below. The result will contain a link that you can use to check that your assignment
has been submitted successfully. If you submit more than once before the deadline, we will only
grade your final submission. If you mistakenly submit the wrong one, you can head to okpy.org
and flag the correct version. There will be another submit cell at the end of the assignment when
you finish!
[3]: # When you log-in please hit return (not shift + return) after typing in your ␣
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_ = ok . submit()
<IPython.core.display.Javascript object>
<IPython.core.display.Javascript object>
Saving notebook… Saved 'hw02.ipynb'.
Submit… 100% complete
Submission successful for user: [email protected]
URL:
1.1 1. Creating Arrays
Question 1. Make an array called weird_numbers containing the following numbers (in the given
order):
1. -2
2. the sine of 1.2
3. 3
4. 5 to the power of the cosine of 1.2
Hint: sin and cos are functions in the math module.
Note: Python lists are different/behave differently than numpy arrays. In Data 8, we use numpy
arrays, so please make an array , not a python list.
[6]: # Our solution involved one extra line of code before creating
# weird_numbers.