Course record Mathematics

Mathematics 109

Trig & Analytic Geometry

Southern Illinois University-Carbondale

475 grades29 sections12 professors
Grades: 2023–2026
Flunk Score4/100
Needs work

Professors 10 of 12

Jeremy Alm 31 grades · 1 term · 2025 3.03GPA
51.6% A
22.6% B
12.9% C
3.2% D
9.7% F

31 letter grades · 1 section · 2025

Compare with the course
Alm vs. the course average
A +30.8
B +1.1
C −15.1
D −10.0
F −6.7

Difference in percentage points.

3.1% withdrew · 1 of 32 enrolled.

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Tumpa Bhattacharyya 29 grades · 1 term · 2025 2.28GPA
20.7% A
17.2% B
41.4% C
10.3% D
10.3% F

29 letter grades · 1 section · 2025

Compare with the course
Bhattacharyya vs. the course average
A −0.2
B −4.2
C +13.4
D −2.9
F −6.1

Difference in percentage points.

3.3% withdrew · 1 of 30 enrolled.

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Suri Rajan 27 grades · 2 terms · 2025 2.22GPA
22.2% A
18.5% B
29.6% C
18.5% D
11.1% F

27 letter grades · 2 sections · 2025

Compare with the course
Rajan vs. the course average
A +1.4
B −3.0
C +1.6
D +5.3
F −5.3

Difference in percentage points.

27.0% withdrew · 10 of 37 enrolled.

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Rasanji Rathnayake 91 grades · 5 terms · 2023–2025 2.18GPA
22.0% A
22.0% B
20.9% C
22.0% D
13.2% F

91 letter grades · 7 sections · 2023–2025

Compare with the course
Rathnayake vs. the course average
A +1.1
B +0.5
C −7.1
D +8.7
F −3.2

Difference in percentage points.

Each term against the course average
Fall 2023Fall 2025

29.5% withdrew · 38 of 129 enrolled.

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Kathirave Giritharan 180 grades · 6 terms · 2023–2026 2.07GPA
17.2% A
21.1% B
30.6% C
13.3% D
17.8% F

180 letter grades · 9 sections · 2023–2026

Compare with the course
Giritharan vs. the course average
A −3.6
B −0.4
C +2.6
D +0.1
F +1.4

Difference in percentage points.

Each term against the course average
Fall 2023Spring 2026

21.1% withdrew · 48 of 228 enrolled.

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Dashun Xu 31 grades · 2 terms · 2024–2026 1.94GPA
16.1% A
19.4% B
29.0% C
12.9% D
22.6% F

31 letter grades · 2 sections · 2024–2026

Compare with the course
Xu vs. the course average
A −4.7
B −2.1
C +1.0
D −0.4
F +6.2

Difference in percentage points.

31.1% withdrew · 14 of 45 enrolled.

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Lindsey Lauderdale 19 grades · 1 term · 2024 · Limited sample 3.05GPA
47.4% A
21.1% B
26.3% C
0.0% D
5.3% F

19 letter grades · 1 section · 2024 · Limited sample

0.0% withdrew · 0 of 19 enrolled.

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Gabriel Ngwe 4 grades · 1 term · 2024 · Limited sample 2.50GPA
0.0% A
50.0% B
50.0% C
0.0% D
0.0% F

4 letter grades · 1 section · 2024 · Limited sample

0.0% withdrew · 0 of 4 enrolled.

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Jeremiah Roberts 23 grades · 1 term · 2024 · Limited sample 2.22GPA
17.4% A
21.7% B
34.8% C
17.4% D
8.7% F

23 letter grades · 1 section · 2024 · Limited sample

0.0% withdrew · 0 of 23 enrolled.

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Porter Summers 14 grades · 1 term · 2025 · Limited sample 1.57GPA
7.1% A
28.6% B
21.4% C
0.0% D
42.9% F

14 letter grades · 1 section · 2025 · Limited sample

44.0% withdrew · 11 of 25 enrolled.

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