Find the order of the matrix product AB and the product BA, whenever the products exist.A is 2 x 1, B is 1 x 1.
A. AB is 2 x 2, BA is 1 x 1.
B. AB is nonexistent, BA is 1 x 2.
C. AB is 2 x 1, BA is nonexistent.
D. AB is 1 x 2, BA is 1 x 1.
Answer: C
You might also like to view...
For the given arithmetic series, what is Sn?a1 = 25, d = -3, and n = 18
A. -18 B. -9 C. 16 D. -36
Use the properties of parallel lines to solve the problem.If m 
n and m?6 = 123°, what are the measures of the other angles?
A. m?2 = m?4 = m?8 = 123° , m?1 = m?3 = m?5 = m?7 = 33° B. m?5 = m?7 = m?8 = 123° , m?1 = m?2 = m?3 = m?4 = 57° C. m?2 = m?4 = m?8 = 123° , m?1 = m?3 = m?5 = m?7 = 67° D. m?2 = m?4 = m?8 = 123° , m?1 = m?3 = m?5 = m?7 = 57°
Evaluate the integral by making a substitution and then using a table of integrals.
A. ln 
+ cos t + C
B. ln 
+ sin t + C
C. ln 
- sin t + C
D. ln 
- sin t + C
If r is a positive number and the point (x, y) is in the indicated quadrant, decide whether the given ratio is positive or negative.III, 
A. Negative B. Positive