A nutritionist is studying the effects of the nutrients folic acid, choline, and inositol. He has three types of food available, and each type contains the following amounts of these nutrients per ounce. Folic acid-   Type A; (1)    Type B; (3)   Type C; (1) choline-       type A; (1)    Type B; (2)    Type C; (1) Inositol-        Type A; (3)    Type B; (4)   Type C; (1)  (a) Find the inverse of the matrix below and use it to solve the remaining parts of this problem. 1 3 1 1 2 1 3 4 1 (b) How many ounces of each food should the nutritionist feed his laboratory rats if he wants their daily diet to contain 12 mg of folic acid, 9 mg of choline, and 19 mg of inositol? (c) How much of each food is needed to supply 7 mg of folic acid, 5 mg of choline, and 9 mg of inositol?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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A nutritionist is studying the effects of the nutrients folic acid, choline, and inositol. He has three types of food available, and each type contains the following amounts of these nutrients per ounce.

Folic acid-   Type A; (1)    Type B; (3)   Type C; (1)

choline-       type A; (1)    Type B; (2)    Type C; (1)

Inositol-        Type A; (3)    Type B; (4)   Type C; (1) 

(a) Find the inverse of the matrix below and use it to solve the remaining parts of this problem.

1 3 1
1 2 1
3 4 1

(b) How many ounces of each food should the nutritionist feed his laboratory rats if he wants their daily diet to contain 12 mg of folic acid, 9 mg of choline, and 19 mg of inositol?

(c) How much of each food is needed to supply 7 mg of folic acid, 5 mg of choline, and 9 mg of inositol?

(d) Will any combination of these foods supply 8 mg of folic acid, 5 mg of choline, and 5 mg of inositol?

- There is a combination of foods giving the required supply.

-There is no combination of foods giving the required supply.    

-This cannot be determined.

 

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