IB Math AA HL M23 Paper 1 TZA/B: At Least Y'all Don't 🔫🔫🔫

Blind speedrun through this exam

[TheIBGeneralDude]

Hi! At 59:16, the solution can be "verified" using the reciprocal polynomial theorem. This states that when the coefficients of the polynomial are swapped, the roots of the polynomial are reciprocated.

The specific "transformation" they're asking for (I think) is the substitution of z as z = 1/w. This transformation converts the first polynomial to the second one. Subsequently, the method you've applied can be used and the roots found.

Hope this helped!

[amritlohia]

1:19:25 Indeed, "area" is non-negative by definition, so you need to take the absolute value of the integral. The integral gives a negative value, but that doesn't make it a "negative area" - it just reflects the fact that int(f(x)-g(x)) gives the area *between* y=f(x) and y=g(x), where f(x) is the upper function and g(x) is the lower function. So taking int(f(x)), i.e. int(f(x)-0), gives the area between y=f(x) and y=0 (i.e. the x-axis), where f(x) is the upper function and y=0 is the lower function. If f(x) is actually negative, then f(x) should be the lower function instead, so they should be subtracted the other way round (giving int(0-f(x)) = int(-f(x)) = -int f(x)), which is where the negative sign comes from.

[amritlohia]

1:01:35 You missed the solution where b = 0, which gives z = 2 (or z = 0, but the question states z isn't zero).

[orimazya]

Any chance for 2024 TZ1 papers??? You’re awesome dude!

[legendsk]

Thank you! Will you be solving Paper 2 for AA Hl TZA/B anytime soon?

[nebullix]

Can someone please explain this part at 11:24, I am a bit confused of where we got 2 from.

[sebastian-wyrt]

Hey i am ib1 math sl aa, and i was wondering if you had any tips for me going forward, as currently i am struggling with math like crazy.

[Armaan-Man]

Great Video! I was wondering what is TZA/B mean, what timezone is that?

[liliyaniraharja]

does anyone have this question paper? i want to try to solve this myself first before checking the answer :(

[miahzmakintosh]

Why do you change your limits from 0 - c to 2 - c²+2 in question 4? I am honestly lost some one help????

[isidorosmaras]

Can you upload the pdf files?thank you!