How Was P2Watch
im quite sure about it, i approximated the area to the difference of two cones i got 49.325425 something something.
pi(9ln2 + 8) = 44.7
so i gess that close enuff
woohoo,, at least i know i got one right,,, all my methods are right, i just screwed up the accuracy marks.
i messed up on the graphs and volumes and identits
(1-cos2x)/sin2x = tanx
It is in fact identical to Q6)a) in the January 2002 Pure Mathematics 2 paper.
Prove by contradiction that Edexcel do recycle past questions.
hence the solutions being something like 25.57 degrees, and (180 + 25.57)???
or was it something completely different?
plus how do u prove c = 4p^2?
what did ppl get for A and p??? on question 4or5 cant remember which
(a) y= f(x+1)
(b) y= |f(x)|
(c) y= f(|x|)
Was part (a) identical in shape to f(x) except moved 1 places to the left, in the negative x direction? Therefore changing x-axis crossing point, turning points.
Was part (b) that it did not go into the negative y-axis and so bounced back off the x-axis?
and part (c), where x goes negative is a reflection of the y-axis as far as x=-1?