Consider a school with four classes and two periods during which the courses can be scheduled. The classes are named A, B, C, and D. Each course must be scheduled in exactly one of the two periods, and the following pairs of courses can not be scheduled at the same time: (B, C), (A, D), (C, D), (B, A). (a) Express the scheduling problem as a Boolean expression. That is, give a Boolean expression that is true if and only if there is a feasible schedule for the courses that satisfies all the constraints.

My has been slow anyone else’s ?

Complete the sentence about a presentation delivery method

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;