Find the product. Write the product in rectangular form, using exact values.[4(cos 120° + i sin 120°)] [6(cos 330° + i sin 330°)]
A. 12(1 + 
)
B. 24i
C. 24
D. -12 + 12i
Answer: B
Mathematics
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Use the method of undetermined coefficients to solve the differential equation.
- 2
+ y = xe-5x - e-5x; 
= 0 and y = 0 when x = 0
A. y = 
ex - 
xex + 
xe-5x - 
e-5x
B. y = 
ex + 
xex + 
xe-5x - 
e-5x
C. y = 
ex - 
xex + 
xe-5x + 
e-5x
D. y = - 
ex - 
xex + 
xe-5x - 
e-5x
Mathematics
Solve the equation.
= 3 + 
A. {-1} B. ? C. {-5, -8} D. {5, 8}
Mathematics
If A4 = 
and A5 = 
, what is A?
What will be an ideal response?
Mathematics
List the intercepts for the graph of the equation.y = x2 + 9
A. (9, 0), (0, -3), (0, 3) B. (0, 9) C. (9, 0) D. (0, 9), (-3, 0), (3, 0)
Mathematics