Maths Game

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:uhwhat... can't be bothered waiting lol i'm gona give the next Q :p

Find the stationary point of the curve: y = 3x^2 – 6x + 2
 
The stationary point is when the gradient of the curve = zero

So firstly you need to find the gradient, and then find the value of x when that is equal to zero..

(have you done diferetiation? you need to use that)
 
Rose_Ice said:
:uhwhat... can't be bothered waiting lol i'm gona give the next Q :p

Find the stationary point of the curve: y = 3x^2 – 6x + 2
Click to expand...

d/dx (3x^2 -6x + 2) = 6x -6

d/dx = 0 (stationary point)

x = 1

thus.... y = 3-6 +2 = -1

(1,-1) --> stationary point


:D
 
^ if teh above is correct:


A manufacturing company operates its two available machines to polish its metal products. The two machines are equally efficient, although their maintenance costs are different. The company's daily maintenance and operating costs are given in dollars as:

f(x1, y) = 60 - x - 1.2y + 0.05(x^2) + 0.1xy + 0.07(y^2)

where x and y are the hours of operation of the two machines. Find the number of hours to operate each machine in order to minimize daily cost.


:D

(Also requires differentiation, of a different sort;D)
 
Last edited:
I haven't covered that :confused: Which exam board did you do?

And yeh the other one is correct
 
^ it's something a lil beyond A-levels... a topic called "functions of several variables"

sorry :hiding:
 
lol ok whatever man :D

Next Question: Find the height of this scalene triangle:

trianglecb9.jpg
 

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