Pablo Chalmeta
Professor of Mathematics

Test Dates | Course Information | Software Resources | Important Links | Contact Information

Test Dates

Test 1:
Test 2:
Test 3:
Final Exam

Course Information

Be sure to read the Course Plan and Course Syllabus.

Software Resources

The homework is completed through MyOpenMath

Three popular choices for software in this class are Excel, Octave and Matlab.

Excel: you have paid for with your student fees.

GNU Octave is a free version of Matlab but does not perform symbolic calculations.

Matlab is used widely in industry. Octave uses the same notation as Matlab.

This Matlab Basics comes from the VT math department and is a great primer on working with Matlab and Octave.

Using Matlab to generate Direction Fields

Important Educational Links

The Online Student Guide: This will provide you with information about testing procedures for both on-and off-campus
Proctor Request Form: This form is date sensitive. Applicable students will need to complete the form and submit it by the date listed.
Free Tutoring at Academic Assistance

Have you taken mathematics placement test?

Enrollment Support:

HOW TO REGISTER FOR CLASSES

BECOME A STUDENT DETAILS

CLASS SCHEDULES

COLLEGE CATALOG

INFORMATION REQUEST

ACADEMIC CALENDARS:

Fall 2025 14-Week Session

Fall 2025 10-Week Session

Fall 2025 1st 7-Week Session

Fall 2025 2nd 7-Week Session

SEE FUTURE ACADEMIC CALENDARS

ACADEMIC CALENDAR FALL SEMESTER 2025 FOURTEEN-WEEK SESSION

FALL SEMESTER 2025
August 18-22	Monday-Friday	Faculty In-service
August 25	Monday	Classes Begin
August 29	Friday	Last Day to Add w/o Instructor Approval
September 1	Monday	Labor Day (College Closed)
September 9	Tuesday	Last Day to Drop and Receive Refund *
October 15-17	Wednesday-Friday	Faculty Research (No Day or Evening Classes)
October 29	Wednesday	Last Day to Drop and Receive “W” Grade *
November 5	Wednesday	Spring and Summer Registration Begins
November 7	Friday	Applications for Graduation Due
November 24-25	Monday-Tuesday	Faculty In-service (No Day or Evening Classes)
November 26	Wednesday	Thanksgiving Break (No Classes; College Closes at Noon)
November 27-28	Thursday-Friday	Thanksgiving Break (College Closed)
December 12	Friday	Classes End
December 15	Monday	Exams Begin
December 18	Thursday	Exams End
December 19	Friday	Faculty In-service
December 22	Monday	Grades Due from Faculty (Noon)
December 22	Monday by 4:00 p.m.	Grades Available Online for Students
December 22-23	Monday-Tuesday	Faculty In-service

* Refund or withdrawal date for Fourteen-Week session only. Contact Admissions & Records Office for information on other session deadlines.

ACADEMIC CALENDAR FALL SEMESTER 2025 TEN-WEEK SESSION

FALL SEMESTER 2025 TEN-WEEK SESSION
September 24	Wednesday	Classes Begin
September 29	Monday	Last Day to Add Classes
October 6	Monday	Last Day to Drop and Receive Refund *
October 15-17	Wednesday-Friday	Faculty Research (No Day or Evening Classes)
November 5	Wednesday	Spring and Summer Registration Begins
November 6	Thursday	Last Day to Drop and Receive "W" Grade *
November 7	Friday	Applications for Graduation Due
November 24-25	Monday-Tuesday	Faculty In-service (No Day or Evening Classes)
November 26	Wednesday	Thanksgiving Break (No Classes; College Closes at Noon)
November 27-28	Thursday-Friday	Thanksgiving Break (College Closed)
December 12	Friday	Exam Day/Classes End
December 15	Monday	Grades Due from Faculty (noon)

* Refund or withdrawal date for Ten-Week session only. Contact Admissions & Records Office for information on other session deadlines.

ACADEMIC CALENDAR FALL SEMESTER 2025 FIRST 7-WEEK SESSION

FALL SEMESTER 2025 FIRST 7-WEEK SESSION
August 25	Monday	Classes Begin
August 27	Wednesday	Last Day to Add Classes
September 1	Monday	Labor Day (College Closed)
September 2	Tuesday	Last Day to Drop and Receive Refund *
September 23	Tuesday	Last Day to Drop and Receive "W" Grade
October 13	Monday	Exam Day/Classes End
October 14	Tuesday	Grades Due from Faculty (noon)

* Refund or withdrawal date for First Seven-Week session only. Contact Admissions & Records Office for information on other session deadlines.

ACADEMIC CALENDAR FALL SEMESTER 2025 SECOND 7-WEEK SESSION

FALL SEMESTER 2025 SECOND 7-WEEK SESSION
October 20	Monday	Classes Begin
October 22	Wednesday	Last Day to Add Classes
October 27	Monday	Last Day to Drop and Receive Refund *
November 5	Wednesday	Spring and Summer Registration Begins
November 7	Friday	Applications for Graduation Due
November 14	Friday	Last Day to Drop and Receive "W" Grade *
November 24-25	Monday-Tuesday	Faculty In-service (No Day or Evening Classes)
November 26	Wednesday	Thanksgiving Break (No Classes; College Closes at Noon)
November 27-28	Thursday-Friday	Thanksgiving Break (College Closed)
December 12	Friday	Exam Day/Classes End
December 15	Monday	Grades Due from Faculty (noon)

* Refund or withdrawal date for Second Seven-Week session only. Contact Admissions & Records Office for information on other session deadlines.

** Granted by the Governor to make Election Day a holiday after the calendar was approved.

Fall 2025 EXAM SCHEDULE

EXAM TIMES	MONDAY DEC 15	TUESDAY DEC 16	WEDNESDAY DEC 17	THURSDAY DEC 18
8:00 - 10:00	8:00 MWF	9:30 TR	9:05 MWF	8:00 TR
10:30 - 12:30	10:10 MWF	12:00 TR	11:15 MWF
1:00 - 3:00	12:20 MWF	1:30 TR	1:25 MWF	4:30 TR
3:30 - 5:30	2:30 MWF	3:00 TR	3:35 MWF

ACADEMIC CALENDAR SUMMER SEMESTER 2025 10-Week Session (T)

SUMMER SEMESTER 2025 10-Week Session (T)
May 21	Wednesday	Classes Begin
May 26	Monday	Holiday (College Closed)
May 28	Wednesday	Last Day to Add w/o Instructor Approval
June 2	Monday	Last Day to Drop and Receive Refund*
June 19	Thursday	Holiday (College Closed)
July 2	Wednesday	Last Day to Drop and Receive “W” Grade*
July 4	Friday	Holiday (College Closed)
August 1	Friday	Exam Day/Classes End
August 4	Monday	Grades Due from Faculty (Noon)
August 5	Tuesday	Grades Available Online for Students

* Refund or withdrawal date for regular session only. Contact Admissions & Records Office for information on other session deadlines.

ACADEMIC CALENDAR SUMMER SEMESTER 2025 First 5-Week Session (D)

SUMMER SEMESTER 2025 First 5-Week Session (D)
May 21	Wednesday	Classes Begin
May 23	Friday	Last Day to Add Without Instructor Approval
May 26	Monday	Holiday (College Closed)
May 27	Tuesday	Last Day to Drop and Receive Refund*
June 11	Wednesday	Last Day to Drop and Receive “W” Grade*
June 19	Thursday	Holiday (College Closed)
June 26	Thursday	Exam Day/Classes End
June 27	Friday	Grades Due from Faculty (Noon)
June 30	Monday	Grades Available Online for Students

* Refund or withdrawal date for regular session only. Contact Admissions & Records Office for information on other session deadlines.

ACADEMIC CALENDAR SUMMER SEMESTER 2025 Second 5-Week Session (E)

SUMMER SEMESTER 2025 Second 5-Week Session (E)
June 30	Monday	Classes Begin
July 1	Tuesday	Last Day to Add Without Instructor Approval
July 3	Thursday	Last Day to Drop and Receive Refund*
July 4	Friday	Holiday (College Closed)
July 17	Thursday	Last Day to Drop and Receive “W” Grade*
August 1	Friday	Exam Day/Classes End
August 4	Monday	Grades Due from Faculty (Noon)
August 5	Tuesday	Grades Available Online for Students

* Refund or withdrawal date for regular session only. Contact Admissions & Records Office for information on other session deadlines.

NRCC homepage | Email: pchalmeta@nr.edu | Office: Godbey Hall 48 | Phone: (540) 674-3600 ext.4266 | Office Hours: Current Schedule

Math 267 - Differential Equations

Pablo Chalmeta
Professor of Mathematics

Test Dates

Course Information

Be sure to read the Course Plan and Course Syllabus.

Software Resources

Important Educational Links

Enrollment Support:

ACADEMIC CALENDARS:

HAVE QUESTIONS ABOUT NRCC?

NRCC ALERTS

STAY CONNECTED

NRCC IN DUBLIN:

CHRISTIANSBURG SITE:

Math 267 - Differential Equations

Pablo ChalmetaProfessor of Mathematics

Test Dates

Course Information

Be sure to read the Course Plan and Course Syllabus.

Software Resources

Important Educational Links

Enrollment Support:

ACADEMIC CALENDARS:

ACADEMIC CALENDAR FALL SEMESTER 2025 FOURTEEN-WEEK SESSION

ACADEMIC CALENDAR FALL SEMESTER 2025 TEN-WEEK SESSION

ACADEMIC CALENDAR FALL SEMESTER 2025 FIRST 7-WEEK SESSION

ACADEMIC CALENDAR FALL SEMESTER 2025 SECOND 7-WEEK SESSION

Fall 2025 EXAM SCHEDULE

ACADEMIC CALENDAR SUMMER SEMESTER 2025 10-Week Session (T)

ACADEMIC CALENDAR SUMMER SEMESTER 2025 First 5-Week Session (D)

ACADEMIC CALENDAR SUMMER SEMESTER 2025 Second 5-Week Session (E)

HAVE QUESTIONS ABOUT NRCC?

NRCC ALERTS

STAY CONNECTED

NRCC IN DUBLIN:

CHRISTIANSBURG SITE:

Pablo Chalmeta
Professor of Mathematics