For a real number , consider the system of equations
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For a real number , consider the system of equations
The planes , and have equations
A till contains 60 coins, each of value 5 cents, 10 cents or 20 cents, and their total value is 700 cents.
Let , and be the numbers of 5-cent, 10-cent and 20-cent coins.
Three quantities , , are believed to satisfy the system
A factory produces three products P, Q and R. Each unit of each product requires time on Machine A, time on Machine B and a fixed quantity of raw material, as shown in the table below.
Practice IB Mathematics Analysis and Approaches (AA) Topic AHL 1.16—solution of Systems of Linear Equations with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for AHL 1.16—solution of Systems of Linear Equations and mirrors Paper 1, 2, 3 style where relevant.
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where is a real constant.
Show that the two conditions on the coins give infinitely many real solutions, and that they are the triples .
Find the number of ways the 60 coins could be made up.
This probability is found to be , correct to three significant figures. Find all possible values of , and .
in which the constants and are obtained from measurements.
Find the value of for which the system does not have a unique solution.
Using that value of , find the value of for which the system is consistent, and find the general solution in that case.
| Product | Machine A (hours) | Machine B (hours) | Raw material (kg) |
|---|
| P | 2 | 1 | 4 |
| Q | 3 | 2 | 1 |
| R | 5 | 4 | 2 |
On a particular day, the factory uses all of its available hours on Machine A, hours on Machine B and kg of raw material. Let , and denote the number of units of P, Q and R produced on that day.
Write down a system of three equations relating , and .
Solve the system to find the number of units of each product produced.