QUIZ I

 

  1. Write the following linear systems in the form of algebraic equations:

 

 

  1. Do the following matrix multiplication. Show all your work.

 

 

 

QUIZ II

 

Calculate the determinant of A, where A=BC

 

 

Show all your work clearly.

 

QUIZ III

 

Solve the following system of linear equations using

  1. Gauss elimination
  2. Cramer’s rule

 

    x1+2x2 + x3= 8

  -x1 - 3x2+4x3=-5

-2x1+2x2 +3x3= 1

 

Show all your work and the steps of the methods clearly.

 

 

QUIZ IV

 

Find the molar % concentration X at 500 K and 800 K:

Fit an appropriate polynomial to the following data and calculate its coefficients. Using the polynomial function, calculate the molar % concentration X at the desired temperatures.

 

X (mol %)

T (K)

1

200

3

300

4

700