Typed up solutions to Maths 2U 2015
View attachment 2015hscm2usol.pdf
View attachment 2015hscm2usol.pdf
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isnt it something about how the range for the semi circle is 0 < y< 3?Yep! I have changed 14a ii (didnt read the question lol)
But for 13b ii) - the first inequality will include the rectangular bit below the semicircle. Pick (0, -1) and put that in the inequality -- -1 <= sqrt(9-0^2) which is true.
Agreed, the Rs shouldve cancelled out.In 16c the line where you sub into the 2nd derivative I believe you have an R where you shouldn't. May be wrong though (late at night)