Thursday, May 17, 2018

2018 Released AP Calculus AB solutions

These are my solutions to the problems released earlier today.  The questions are not included as they are copyrighted.  I have no idea if they are all correct as I haven't had a chance to check them against anyone else yet.

Calculator #1

Calculator #2


Non-calculator #3


Non-calculator #4 

Non-calculator #5

Non-calculator #6


6 comments:

Anonymous said...

okay ... that's impressive. that's above my math level!

i guess it's everyday stuff for a nuclear engineer and a high school math teacher, though :)

heresolong said...

Entirely possible that they are above my math level also. We shall see when other solutions sets start to be released. :-)

I'm going to check with http://askmrcalculus.com/ little later today. He's the one that taught the last AP Calculus prep class I attended. He's a pretty sharp fellow.

Anonymous said...

i was really, really good at math ... until the stupid wheel started going round and round and someone needed to know something about that?! and until the stupid trains kept leaving the station at different intervals, and someone needed to know something about that?! and i tried and tried to figure it out, even went after school for tutoring with the math teacher, but it never clicked. sigh. but i loved math until then!

probably can't remember much of it now, and the way my girls were taught is beyond me :)

so i see stuff like that ... with symbols i never used ... and it's quite impressive. even knowing what those symbols do and mean is quite impressive to me :)

heresolong said...

Two stupid mistakes found.

4: copied 0.03 as 0.3. Correct answer should be 0.75.

6: left the negative off the LH intagral when I copied the problem to my clean paper. That the threw off my constant And my solution. Constant should be 1/3 and solution should be - 6/(x^2+2)+2

I'll post corrected versions later.

heresolong said...

More stupid mistakes.

Problem #1. I calculated the time when there would be no people in line. Did everything perfectly but used an equation for t > 300 sec. Then didn't add 300 to my answer. Gak!

Problem #5. Did everything correctly then wrote my answer as e^(pi/4) rather than e^(5pi/4). Pure transcription error.

Finally, my first actual math error, Problem 5d. I stated that the limit of g'(x) was undefined, but of course the graph was of g'(x) and therefore I should have taken g'(x)=2 directly from the graph.

So, four stupid errors in transcription (loss of 4 points) and one math error (possibly just a loss of 1 point since I correctly recognized and used L'Hospital's Rule). 50/54.

Interesting that this was the same problem that I had in college. I always made one little mistake somewhere, usually stupid, not a lack of understanding.

Anonymous said...

Pure transcription error.

I always made one little mistake somewhere, usually stupid, not a lack of understanding.



my aspie girl had 'transcribing' as an accommodation through special ed in public school. she would often even fill in the wrong bubble on scan sheets when she had the right answer circled on the test. however, this is a huge issue for her with math ... keeping all the lines of figures straight and copying the information from one place in the problem to the next. she could often figure a lot of the problem out in her head, but transcribing that onto the paper in the right place is still an issue for her. not that this really fits into what you're doing here ... but it's what my brain picked out of everything you wrote (meaning, i don't understand the first thing about anything math related you did, but i DID understand 'transcription error!' :) )