Determine the value or values that are excluded from the following expression.
A. -6
B. 6
C. 0
D. none
Answer: B
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Use the total differential dz to approximate the change in z as (x, y) moves from P to Q. Then use a calculator to find the corresponding exact change ?z (to the accuracy of your calculator).tan-1 (x2y;) P(1, 1), Q(0.97, 1.02)
A. dz = 0.02; ?z = 0.0205521041 B. dz = -0.02; ?z = -0.0205521041 C. dz = 0.2; ?z = -0.205521041 D. dz = -0.2; ?z = -0.205521041
Evaluate the expression without using a calculator. (Assume the variable represents a positive number.)
?
?
A. 
B. ?
C. ?
D. ?
E. ?
A is an input-output matrix of an industry and D is the demand matrix. Find the amount of each product that must be produced in order to meet the demand.
What will be an ideal response?
Complete the square for the binomial. Then factor the resulting perfect square trinomial.x2 + 6x
A. 9; x2 + 6x + 9 = (x + 3)2 B. 6; x2 + 6x + 6 = (x + 36)2 C. 3; x2 + 6x + 3 = (x + 9)2 D. 36; x2 + 6x + 36 = (x + 6)2