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ok 6.a) was x = 3pi/4, 9pi/4, -3pi/4, -9pi/4 for 7.a), you had to multiply all terms by ln x, making the function a quadratic (ln x)^2 - 2(ln x) -3 = 0 sub in u = ln x u^2 - 2u -3 =0 (u-3)(u+1) = 0 u = 3, u = 1 Therefore ln x =3, ln x =1 x = e^3, x = 1/e

Re: how did you go? the question about the typanic membrane was so weird, i had no idea what did you guys write for the experiment to test whether the structure is a tympanic membrane?

Re: CSSA Bio exam thoughts That is 100% correct. Although they did have a common ancestor, they moved to seperate parts of the globe. Because environmental pressures in the two environments were similar, the emu and ostrich developed similar features. It cannot possible be divergent...

Re: CSSA Bio exam thoughts yep. found it way easier:D than expected. communication was very easy and so was the 7 marker in the core;)

I believe the question aked which property of radio waves Hertz did not use in his experiments. the options were: diffraction, quantisation, refraction, and polarisation. I put quantisation but im not sure:uhoh:

did anyone do the quanta to quarks option? i thought it was ok, but i had no idea on the 7 marker on neutron scattering and does anyone know the multiple choice answer about Hertz's experiment?

lol wat did u guys write 4 the westinghouse question? i wrote about how AC generators make life easier and require less unskilled labour. is that right?