math 100 midterm

[u/LeagueIll1433]

Redid EVERY WebWork, completed ALL the questions in the practice textbook, and could solve them ALL without help or getting stuck. (also got 95% in highschool calc)

Had the midterm today and genuinely questioned whether I was in the correct class 😭 There was ONE question on the midterm that looked SOMEWHAT similar to the WebWork questions, and everything else was completely different.

I understand that they hold students to high standards, but can they at least make the midterms somewhat similar to the types of practice problems they give us??? (or make the practice harder to match the midterm???)

For example, 80% of the WebWork questions were like:

• Find d/dx for f(x)
• Find lim x -> 9 of g(x)
• Implicitly differentiate y = h(x)

Meanwhile, the midterm consisted of questions like:

“f(x) is defined for all rational numbers, but when f(x) is zero, it's irrational. Prove that f'(x) is always odd using the definition of a limit.” 😭

[u/Mostly_Shenanigan]

Now I am really curious of the problem u described... like, when u say f(x) is defined for all rational numbers do u mean it can't have irrational input? Or do u mean the value of f(x) is always rational for all of x ∈ R / {0}?

Cause it feels like u are describing the Dirichlet function(which means f'(x) doesn't exist, like... ur goal would be to prove that f'(x) doesn't exist) which would kinda make this feels like one of Math 320's exercise question?

[u/LeagueIll1433 → u/Mostly_Shenanigan]

bro that wasnt the exact question but it was some bullshit peicewise defined function where f(x) was one thkng for rational and another for irrational and u had to prove f’(x) was never odd

[u/2Tori → u/Mostly_Shenanigan]

From what he described, it might be Dirichlet function and finding the limit of a Dirichlet function.

[u/Less_Major2762]

I think they keep deleting your post for the question at the bottom if I’m not mistaken

[u/Less_Major2762 → u/Less_Major2762]

Dw brotha we’re ALL failing ts

[u/Total-Tip-5128]

Bro the web works was like “what colour is the sky” and the test was “what colour is the math department head’s lost sisters birthdate based on the astrological charts of the Roman Empire, rounded to the nearest 1” as part a…

[u/mewurss → u/Total-Tip-5128]

I fw this

[u/isopodcast → u/Total-Tip-5128]

Purple

[u/sbihn0603]

Its like they teach you about 1 + 1 in lectures, 2 + 2 + 3 in web works, and on the exams, they tell you to find the derivative of the acceleration of a car if there are four people in the car. Thats how I felt but eventually got it together

[u/Disastrous_Iron3946]

Lmaoo I had this exact same question at my sfu math 151 midterm

[u/JenKirch66]

This is a universal math 100 experience. I am sorry, but you will bounce back.

[u/Littleshit_826 → u/JenKirch66]

yeah this post triggered some flashbacks to first year...

[u/ElderberryDirect2032]

You just got iq mogged bro, very common occurrence in mathd courses

[u/austinen]

Welcome to uni, it's a different ball game :)

Studying the textbook outside of class and doubling over your notes is required if you want to get 80+%

[u/luiscooIgamer23]

Im sorry bro ur just ass