MCV4U UNIT 4 FINAL TEST 2026
COMPLETE QUESTIONS CORRECT
ANSWERS GRADED A+
●● What are profit and marginal cost problems?.
Answer: revenue VS total cost VS profit VS marginal cost
change in total cost of producing one more item: like if producing one
more pair of boots warrants a machine repair
●● marginal cost and cost.
Answer: marginal cost is the derivative of cost
(same for demand, revenue, and profit for marginal demand, marginal
revenue, and marginal profit, respectively)
●● Equations: trigonometric derivatives.
Answer: d/dx sin x = cos x
d/dx cos x = -sin x
d/dx tan x = sec^2 x (or 1/cos^2x)
NOTE that these only work for RADIANS!!
COMPLETE QUESTIONS CORRECT
ANSWERS GRADED A+
●● What are profit and marginal cost problems?.
Answer: revenue VS total cost VS profit VS marginal cost
change in total cost of producing one more item: like if producing one
more pair of boots warrants a machine repair
●● marginal cost and cost.
Answer: marginal cost is the derivative of cost
(same for demand, revenue, and profit for marginal demand, marginal
revenue, and marginal profit, respectively)
●● Equations: trigonometric derivatives.
Answer: d/dx sin x = cos x
d/dx cos x = -sin x
d/dx tan x = sec^2 x (or 1/cos^2x)
NOTE that these only work for RADIANS!!
