How to CRUSH Free Response Question 4 on the AP Precalculus Exam

***in the example for section B part i the (x + 1) should be raised to the 4th power. Sorry!!!

This video explains exactly what the 4th free response question on the AP Precalculus exam will look like and how you can ace it!

If you like learning from my videos over AP precalculus take a look at the Ultimate Review Packet for AP Precalculus. It has everything you need to prepare for unit tests and quizzes in class as well as prepare for the AP Precalculus exam. The Ultimate Review Packet has study guides over the topics with TONS of practice problems. It also has practice free response questions that are modeled exactly like the FRQs that will be on the exam, and much more. Check out with the link below.

[TheRealStrangeV]

8:40 is the (x+1) supposed to be (x+1)^4

[quantumrelativity]

The exam is 1hr away… Either we’re cooked or we cook 👨‍🍳

[rouleit]

Thank you so much for all your videos! They’ve been really helpful to me.

[someonesomewheresometime]

Hi sir! Can you explain why you did not add 2pi*n to the last problem? I understand that it is an inverse trig function, but what is the rule for inverse trig functions and multiple values of x?

[Toying_]

In the last problem, could you explain why x = - (root(15))/(5pi) isn't an answer? I got this by using 5pi/3 instead of pi/3 so when I got to the tangent section the sin value was negative resulting in a negative answer.

[comicstanz]

For the last problem part c would that one have an infinite number of possible answers as well so you would need to add the 2pi*n as well or does this one only have the one solution?

[supernovic]

For question 3 we can use fractions for the period or coordinates as well right

[sowmyarana]

Hi sir! I wanted to ask if writing the domain limitations for the log rewriting questions or anything where the answer ends up being a fraction is a mandatory thing? Like if I don’t do it will I get no points? Thank you!

[prythal]

this frq cooked me, the frqs especially the 4th were so hard 😭

[lukasfritsch]

For part C do I need to provide both answers you circled? Or just one of those solutions showing the domain? Thanks

[MaggieV.H]

In part B, when you were simplifying the logarithm into a single log, why did you not put the coefficient of 4 as an exponent?

[tallest_wookie]

15:27 doesnt inverse sine mean that the only acceptable values are from the right half of the unit circle? therefore, wouldn't 2pi/3 not be a solution?

[stop]

For the first problem I simplified 79/3 to 26.333, do you think that still counts? might be a stupid question.

[godforever]

I think you forgot to add, "+ 2pi k" for the last question involving tangent

[aurekswiatlowski]

bro fucked up his math at like 8:30 haha