AP Calculus AB - Unit 2 Progress Check: MCQs & FRQs (Part B)

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#2: 4:23
#3: 6:02
#4: 7:53
#5: 9:55
#6: 12:08
#7: 16:48
#8: 21:06
#9: 23:44
#10: 29:39
#11: 32:11
#12: 37:49
#13: 39:52
#14: 39:58
#15: 40:09
FRQ#1: 42:51
FRQ#2: 57:37
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This video is really helpful, helped me understanding a lot of the problems, thank you so much!

madelinewang
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I believe that you have mistake in Q9. Cause why do x (exponent of which is -1/2) multiplies to x and gives us minus square root of x? Basically, 1/square root of x multiplied to x gives us positive squared root of x. Meanwhile in equation we need negative number of square root of x multiplied to sinx. (I hope you get what I am trying to say since I am an international student + self studying ^^ )
So the answer is C.. I guess

nuradilzholmukhan
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Someone, please explain why we take derivative twice for Q5.

BojackHorseman-mn