Arrange the following steps in the proper sequence concerning the solution of a linear programming problem.
(A) Graph each constraint as though it were binding, i.e., as if held with strict equality
(B) Find the feasible region, the area of the graph that simultaneously satisfies all constraints
(C) Superimpose contours of the objective function on the feasible region to determine the optimal corner of the region
(D) Construct a graph, placing a decision variable on each axis
Choose the correct answer from the options given below:
Step 1: Sequence of steps for solving linear programming problems.
To solve a linear programming problem, certain steps must be followed in sequence.
Step 2: Proper Order of Steps:
- (D) Construct a graph, placing decision variables on the axes.
- (A) Graph each constraint as though it were binding, i.e., held with strict equality.
- (B) Find the feasible region that satisfies all constraints.
- (C) Superimpose contours of the objective function to determine the optimal corner of the region.
Step 3: Correct Order.
Thus, the correct sequence is: - First, construct the graph (D). - Then, graph each constraint (A). - Followed by finding the feasible region (B). - Finally, superimpose the contours to find the optimal solution (C).
Step 4: Conclusion.
The correct sequence is (D), (A), (B), (C), so the correct answer is (2).
Match List-I with List-II
\[\begin{array}{|c|c|}\hline \textbf{List-I} & \textbf{List-II} \\ \hline \text{(A) Closed Interval} & (I)\ [a, b] = \{\,x \in \mathbb{R} : a \leq x \leq b\,\} \\ \hline \text{(B) Open Interval} & (II)\ (a, b) = \{\,x \in \mathbb{R} : a < x < b\,\} \\ \hline \text{(C) Unbounded Interval} & (III)\ [a, b) = \{\,x \in \mathbb{R} : a \leq x < b\,\} \\ \hline \text{(D) Half Open Interval} & (IV)\ (a, \infty) = \{\,x \in \mathbb{R} : a < x\,\} \\ \hline \end{array}\]
Choose the correct answer from the options given below:
A weight of $500\,$N is held on a smooth plane inclined at $30^\circ$ to the horizontal by a force $P$ acting at $30^\circ$ to the inclined plane as shown. Then the value of force $P$ is:
A steel wire of $20$ mm diameter is bent into a circular shape of $10$ m radius. If modulus of elasticity of wire is $2\times10^{5}\ \text{N/mm}^2$, then the maximum bending stress induced in wire is: