Find all the second partial derivatives.z = 
A. 
= - 
; 
= 
; 
= 
= 
B. 
= - 
; 
= 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= 
D. 
= - 
; 
= 
; 
= 
= 
Answer: D
Mathematics
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Determine the amplitude and range of the function and sketch its graph.y = 5 cos x
A. amplitude: 5; range: [0, 5]
B. amplitude: 5; range: [0, 5]
C. amplitude: 5; range: [-5, 5]
D. amplitude: 5; range: [-5, 5]
Mathematics
Perform the indicated operation and, if possible, simplify. Assume that all variables represent positive real numbers. -4
- 9
A. -13
B. 22
C. -14
D. -22
Mathematics
Factor the expression completely, if possible.z3 + 343
A. (z + 7)(z2 - 7z + 49) B. (z + 7)(z2 + 49) C. (z - 7)(z2 + 7z + 49) D. (z - 343)(z2 - 1)
Mathematics
What does the expression 
equal?
?
A. 10 B. x C. 0 D. 1 E. 17
Mathematics