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# Conversation Between Overmars and zxh800

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1. zxh800
18-11-2011
Hi,

For z= py-(a+by^2) is z a function for profit? with py= Total Revenue and a+by^2 being total cost? A= fixed cost and by^2 is for the variable cost? Hence, p=2by could be used to find where variable costs are lowest? Anyway, nice question. Do you think Camb applicants who've done their maths A-level will need to know Integration? (i.e. the A2 stuff like integration by parts, integeration by subsitution and integrating trig identities)