The following questions refer to the crt technologies project selection example presented in this chapter. formulate a constraint to implement the conditions described in each of the following statements. a. out of projects 1, 2, 4, and 6, crt’s management wants to select exactly two projects. b. project 2 can be selected only if project 3 is selected and vice-versa. c. project 5 cannot be undertaken unless both projects 3 and 4 are also undertaken. d. if projects 2 and 4 are undertaken, then project 5 must also be undertaken

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.  

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.