black.mamba
Active Member
equate coefficients of x^n on each sideAnyone know how to do the first part of 14 a)? Only question I couldn't figure out
equate coefficients of x^n on each sideAnyone know how to do the first part of 14 a)? Only question I couldn't figure out
Then use ncr = nc(n-r)equate coefficients of x^n on each side
There was a super easy way to do that one: let theta = arccos(x)last q of q13 tho fml u had to test on both sides of the discontinuity
Noooooolast q of q13 tho fml u had to test on both sides of the discontinuity
Was this exam easier or harder than usual? I think I’m getting mid E3 I couldn’t do a single part of Q14 sad
Tbh, I'm more confident with this exam than the advanced exam.How is everyone feeling after the exam? Are we happy with our results?
How many marks was that question? I just said same derivative so differ by a constant and subbed x=1...There was a super easy way to do that one: let theta = arccos(x)
cos(theta)=x
draw a right angle triangle with theta as the angle, x as adjacent, 1 as hypotenuse and sqrt(1-x^2) as opposite
then tan(arccos(x)) = tan(theta) = opposite over adjacent = sqrt(1-x^2)/x
moments before disaster... that q14Few hours til the exam... I'm just hoping there's not too many perms and combs questions
decent aside from the last part of q13 and I’m guessing no chance for state rank with 69?How is everyone feeling after the exam? Are we happy with our results?
3 marks, we should get 2 right?How many marks was that question? I just said same derivative so differ by a constant and subbed x=1...