(a) During MCO, a bookstore sold 3 units of dictionaries, and 3 units of comics, and purchased 2 units of novels on day one. On day two, the bookstore purchased 3 units of novels and sold 4 units of dictionaries, and one unit of comic. On the third day, the bookstore sold 2 units of dictionaries, one unit of novel, and purchased 2 units of comic. The bookstore earned RM 100 on day one, RM 90 on day two and RM 120 on day three after the sales and purchases. Given the price of dictionary, novel, and comic are x, y, and z ringgit per unit respectively. AN UNT Write the system of linear equations. Hence, determine the prices per unit of dictionary, comic, and novel. Find the inverse matrix using Gauss-Jordan elimination method on augmented matrix. Hence, solve the system of linear equations using the inverse matrix.
(a) During MCO, a bookstore sold 3 units of dictionaries, and 3 units of comics, and purchased 2 units of novels on day one. On day two, the bookstore purchased 3 units of novels and sold 4 units of dictionaries, and one unit of comic. On the third day, the bookstore sold 2 units of dictionaries, one unit of novel, and purchased 2 units of comic. The bookstore earned RM 100 on day one, RM 90 on day two and RM 120 on day three after the sales and purchases. Given the price of dictionary, novel, and comic are x, y, and z ringgit per unit respectively. AN UNT Write the system of linear equations. Hence, determine the prices per unit of dictionary, comic, and novel. Find the inverse matrix using Gauss-Jordan elimination method on augmented matrix. Hence, solve the system of linear equations using the inverse matrix.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:(a) During MCO, a bookstore sold 3 units of dictionaries, and 3 units of comics, and
purchased 2 units of novels on day one. On day two, the bookstore purchased 3 units
of novels and sold 4 units of dictionaries, and one unit of comic. On the third day, the
bookstore sold 2 units of dictionaries, one unit of novel, and purchased 2 units of comic.
The bookstore earned RM 100 on day one, RM 90 on day two and RM 120 on day three
after the sales and purchases. Given the price of dictionary, novel, and comic are x, y.
and z ringgit per unit respectively.
AN, UN
Write the system of linear equations. Hence, determine the prices per unit of dictionary,
comic, and novel. Find the inverse matrix using Gauss-Jordan elimination method on
augmented matrix. Hence, solve the system of linear equations using the inverse matrix.
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