







Léo a programmé sa tortue 
20100215 

Lucas pose la question : pouvez vous m'aidez a résoudre le problème géométrie suivant:
Léo a programmé sa tortue en lui donnant les ordres suivant:execute 5 fois les instructions suivante:
avance de 4 cm puis tourne a 72° a droite.Dessine le parcour de la tortue.
La tortue est partie d'un point A , que lui dire pour qu'elle revinne a son point de départ?
Merci d'avance
Lucas Claude Tardif lui répond. 





programme de tracé 
20041021 

jeanyves pose la question : pourriez vous me donner la définition de: qu'es ce qu'un "programme de tracé" Claude Tardif lui répond. 





A linear programming problem 
20130227 

Kelley pose la question : A manufacturer of skis produces two types: downhill and crosscountry. Use the following table to determine how many of each kind of ski should be produced to achieve a maximum profit. What is the maximum profit? What would the maximum profit be if the time available for manufacturing is increased to 48 hours.

Downhill 
Crosscountry 
time available 
manufacturing time per ski 
2 hrs 
1 hr 
40 hr 
finishing time per ski 
1 hr 
1 hr 
32 hr 
profit per ski 
$70 
$50 

Penny Nom lui répond. 





Determine if a point is inside a cube 
20101124 

Ali pose la question : hi every one
i have a problem with cube
they told me to write a program that determine if a point is
inside a cube
so i need the equation of the cube to do the comparison.
in sphere it is easy
sqrt((xxp)+(yyp)+(zzp))<=radios
if u please could help me Robert Dawson lui répond. 





a^(2^n) 
20101022 

Tim pose la question : I am trying to understand a^(2^n).
The hint they give is a^(2^(n+1)) = (a^(2^n))^2
I am writing a program that will solve a^(2^n) recursively but need to
understand the power before I begin.
I am currently pursuing writing (a) x (a^(2^(n1))) where the
(a^(2^(n1))) would be the recursive function call a n approaches 0.
Once n is 0, the result would be multiplied by a two more times.
Anyway, explaining these powers would be appreciated. I will most likely
complete the program before the answer but I want to understand the
logic of these powers. Thank you, Tim Stephen La Rocque lui répond. 





Linear programming using the Simplex Method 
20091228 

William pose la question : A gold processor has two sources of gold ore, source A and source B. In order to keep his plant running,
at least three tons of ore must be processed each day. Ore from source A costs $20 per ton to
process, and ore from source B costs $10 per ton to process. Costs must be kept to less than $80 per day.
Moreover, Federal Regulations require that the amount of ore from source B cannot exceed twice the
amount of ore from source A. If ore from source A yields 2 oz. of gold per ton, and ore from source B
yields 3 oz. of gold per ton, how many tons of ore from both sources must be processed each day to
maximize the amount of gold extracted subject to the above constraints?
I need a linear programming solution or algorithm of the simplex method solution.
Not a graphical solution. Thanks. Janice Cotcher lui répond. 





Linear programming 
20070424 

Sylvia pose la question : What is graphing linear programming? Penny Nom lui répond. 





Linear programming 
20020527 

Jes pose la question : A machine shop makes two parts, I and II, each requiring the use of three machines, A, B, C. Each Part I requires 4 minutes on Machine A, four minutes on Machine B and five minutes on machine C. Each Part II requires five minutes on Machine A, one minutes on Machine B and six minutes on Machine C. The shop makes a profit of $8 on each Part I and $5 on each Part II. However, the number of units of Part II produced must not be less than half the number of Part I. Also each day the shop has only 120 minutes of machine A, 72 minutes of Machine B, and 180 minutes of Machine C available for the production of the two parts. What should be the daily production of each part to maximize the shop's profit? Claude Tardif lui répond. 





Vitamins A and B 
20010114 

Sara pose la question : A diet is to include at least 140 mg of Vitamin A and at least 145 mg of vitamin B. these requirements are to be obtained from two types of food. type X contains 10 mg of vitamin A and 20 mg of vitamin B per pound. Type Y contains 30 mg of vitamin A and 15 mg of vitamin B per pound. if type X food costs $12 and Type Y $8 per pound, how many pounds of each type of food should be purchased to satisfy the requirements at the minimum cost? Claude Tardif and Harley Weston lui répond. 





Pillows and Cushions 
20000927 

Fiona pose la question :
The following problem was given to grade eleven algebra students as a homework assignment. To manufacture cushions and pillows, a firm uses two machines A and B. The time required on each machine is shown. Machine A is available for one full shift of 9.6 hours. Machine B is available for parts of two shifts for a total of 10.5 hours each day. Harley Weston lui répond. 





Careers after a math degree 
20000331 

Jeanne Hyer pose la question : What type of careers can a person have with a math degree, and what is the closest thing that you have to an undergraduate degree in financial mathematics? (Administration, math, actuarial science, etc.) Harley Weston lui répond. 





Linear programming and optimization 
19990409 

Shams pose la question : What is Linear programming and optimization? Jack LeSage and Penny Nom lui répond. 





Operations Research 
19981008 

Lisa Barrett pose la question : What is the history of operations research and the study of linear programming? Judi McDonald lui répond. 

