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OCR MEI C2 Maths exam

Thought this was easier than last time! How did everyone get on?

Also, the one question, Y= a+x^b..

Find logX in terms of Y a and b.. What did everyone do?
Reply 1
Avatar for ryangourley
ryangourley
log10y-log10a over b but you could simplify to log10y/a over b
Reply 2
Avatar for dhillon1
dhillon1
10
:ditto:
I did the same for that question. Does anyone know how the last question should have been done?! I panicked and couldn't work out how to get 1.55 radians for the angle.

And I wasn't sure about the part where you worked out how many seats there were in the different rows. I worked out the circumference and converted this to centimeters and then divided this by 80cm (how much space one seat takes up). Does this sound right to anyone?? I got something like 58 or 68, I can't remember.
Reply 4
Avatar for Biochem17
Biochem17
OP
Yeah you have an angle using the Arc Length = rX (usually Theta)

To find the number of seats I found the length of the circumference of the whole circle (2*Pi* x the radius) and then I found the arc length of the sector of the circle that was hidden by the stage.. Then the entire circumference - the arc length give the length of the front row.. Then divide that by the length of each seat, round down to the nearest seat and Bobs your uncle! :biggrin: (I hope!)

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